Questions tagged [blood]

For questions about blood, its use in the circulatory system, its effect and what would happen if it was changed.

Filter by
Sorted by
Tagged with
0
votes
1answer
28 views

How do you transfer a blood curse? [closed]

The curse is made into a tea using the ashes of war, the blood of fallen soldiers, and the tears of their widows and then given to the victim to drink. Since the curse is in the victim's body and made ...
17
votes
7answers
5k views

How can a 15-year-old vampire get human blood?

Since they can't really work a job that would allow easy access to blood, I thought of having them volunteer at a blood bank then maybe steal a bag. Alternatively, is it plausible that they would come ...
2
votes
2answers
129 views

How would certain blood types be more susceptible to “blood bending” than others?

There exist abilities that are specifically tuned to certain individuals or clans. One of these strange abilities is known as blood-bending, which is the power to turn an individual's blood against ...
5
votes
3answers
183 views

Infectious hemophilia

I want to know if the disease I invented is realistic or a total fiction. Coagulopathies or bleeding disorders, like hemophilia, are diseases in which the blood's ability to coagulate is impaired. But,...
24
votes
4answers
5k views

Would a vampire still be able to be a practicing Muslim?

I had debated whether asking this but given the very good answers on this question I thought it would be worth a shot. I have a character in my story who is a vampire and a practicing Muslim. ...
8
votes
9answers
3k views

If a scientist were to compare the blood of a human and a vampire, what would be the difference (if any)?

I tried to stick with vampire folklore and the various movies/shows about vampires when I thought of how vampires would be like if they really existed, but I also wanted to keep it as realistic as ...
4
votes
1answer
183 views

What would bloodstains look like after 500 years?

I realise this is a bit of a strange question, but what would bloodstains look like after ~500 years? Specifically, what would a text written on parchment using (human) blood as ink look like after ...
4
votes
1answer
448 views

What would 500 year old dried blood look like?

Imagine you are in a mountain cave (in the mountain, or under the earth), and you stumble upon a what seems to be a lake of blood. It's roughly 4mx4m (13ft) wide and 2m (6.5ft) deep. The blood is ...
29
votes
7answers
6k views

Can blood form snowflakes?

In a (marginally) cursed world rains of blood are an occasional occurrence. The water in the clouds is magically transmuted into blood at the point it starts to coalesce into droplets (no need to ...
6
votes
0answers
105 views

What blood pigment type is immune to ammonia poisoning?

I am designing a world in which the biological solvent is an ammonia-water mixture and need help finding out which blood pigments (Hemoglobin, Hemocyanin etc.) would be immune to the negative effects ...
23
votes
5answers
9k views

What colour would our blood be if our blood was based on gold? [closed]

Humans have blood based on iron, thus our blood is red. Some aquatic life has copper based blood, thus their blood is blue. If we were gold based, what colour would our blood be, and why? What would ...
3
votes
4answers
247 views

How do male vampire loses iron?

In my universe the vampire race all had pale skin due to low iron presence in blood and thus they had to constantly keep a certain level by feeding on human, the female vampire can lose a lot of iron ...
-3
votes
2answers
222 views

Could a blade rusted by dried blood become jammed in its sheath?

My character forgot to clean his sword after killing a man. The blade stayed for weeks in her sheath, drying the blood. I wrote a scene where he can't unsheathe his sword because it's "jammed&...
3
votes
1answer
212 views

Bio “blood magic” how would it work in science fantasy [closed]

I'm putting together a story that centers around "blood magic" and ancient civilization that uses some "rare crystals" as infinite source of Energy. the blood magic comes in gas form [from any source ...
4
votes
3answers
372 views

Do dead human bodies have a particular smell?

I'm working on a story where there is a crime scene where the protagonist (who has a superhuman sense of smell) notices a scent that smells like human corpses due to their abilities. I'm wondering how ...
3
votes
1answer
84 views

Colors of cobaltodihistidine [closed]

I have heard the complex, Cobaltodihistidine, (not coboglobin) mentioned several times on this site in relation to alternative oxygen carriers, and I believe that this complex could be what my species ...
-4
votes
1answer
75 views

How would blood types and blood transfusions work in a setting with widely different humanoid races? [closed]

This is something I think is almost always overlooked in science fiction settings. Do different races have completely different blood types from those of say humans? Could a Klingon from Star Trek ...
0
votes
1answer
107 views

Why would spell circles written in blood which contain iron be more powerful than using gold or silver ink? [closed]

Set in the 13th century A. D. the search for Philosopher's stone which is said to allow user to transmute base metal into gold or perhaps even diamonds as some have claimed. Since then people starts ...
3
votes
2answers
222 views

Would cold-blooded dragon be suitable for flying?

I am designing a cold-blooded dragon about the size of a house cat with a wingspan of 3 metres from tip to tip. It will climb on top of rocks at noon when there is ample sunlight overhead. I need it ...
22
votes
15answers
9k views

Where could a vampire get blood without harming people?

I am looking for possible ways in which a vampire could obtain blood to feed in an modern urban fantasy setting explicitly without harming humans or other sapient beings. Parameters for this question ...
2
votes
1answer
135 views

How to prevent vampires from catching bloodborne diseases? [duplicate]

Vampires are known to be humanoid creatures to whom the nutrients in blood are essential. I will assume that, for the purpose of this question, vampires are entirely human but consume blood, may it ...
6
votes
1answer
140 views

Could a blood transfusion from immune survivors of a deadly, bioengineered virus grant the same immunity to those who don't have it?

First question so hope I'm doing this right! Working on a setting right now where a bio-engineered virus/plague is wiping out a large portion of humanity. Most died upon first exposure. Some survived, ...
4
votes
1answer
233 views

What kind of metal-based blood types be effective/used in transporting non-oxygen gases and what would their color be?

There's iridium-based blood called Chloro-carbonyl-bis(triphenylphosphine)-iridium that's effective at transporting hydrogen alongside oxygen. What I want to know is that, are there other metal-based ...
7
votes
2answers
348 views

Would it be possible for my fantasy creature to have black blood?

A friend of mine has a race of creatures in her headworld and has been wondering about a biological answer to justify the color of her race's blood even though magic is a bit sprinkled in there. One ...
8
votes
3answers
420 views

Blood for hydrogen breathers

Some follow-up thoughts on this question... Hydrogen isn't very soluble in water. Oxygen is more so, but still sufficiently insoluble that most oxygen-breathing Earth creatures use special oxygen ...
0
votes
2answers
200 views

Can ice magic freeze blood?

In my story, one of my main characters has ice powers. She can turn water into ice, she can conjure ice (sucking moisture out of air and freezing it). She can also drop someone's body temperature, as ...
5
votes
3answers
780 views

What would humans look like if their blood were silver?

I have a species in mind that I want to write about for a book I'm planning, and they look exactly like humans (minus the 'unnatural' hair and eye colors they can posses). However, they have silver ...
11
votes
7answers
4k views

Blood-based alcohol for vampires?

So a setting I had in mind has vampires, of the rather traditional kind. They aren't as inhumanly strong or fast, but in turn they aren't instantly incinerated by sunlight, instead just being really ...
21
votes
8answers
6k views

What could a Medieval society do with excess animal blood?

In my fantasy project I have a vaguely medieval society (specifically the high period). However some of their religious practices are more along the lines of a iron age society. One of the biggest ...
5
votes
3answers
565 views

Is acid blood possible?

I'm designing an alien species, whose blood is highly acidic and can easily cause someone's hand to melt down. It's pretty similar to the Xenomorphs from Ridley Scott's Alien, except for the color ...
4
votes
2answers
127 views

If oxygen is extracted from blood, would the process cause any hormones within it to be extracted as well? [closed]

Let's say oxygen is continuously being extracted from the blood of a Giant Pacific, 1-and-a-third years old octopus and will be injected into a human using a process similar to this: https://www....
1
vote
2answers
158 views

How could the hormones of an octopus affect an adult man? [closed]

Let's say the hormones of a Giant Pacific Octopus, 1-and-a-third years old, enter the bloodstream of an adult male. How would or could that affect him?
5
votes
3answers
354 views

What non-primate animals have similar blood to humans?

I am writing about a blood magic cult, and they drink/paint with collected blood to preform rituals and bursts of magic. Most of their supply is garnered through the use of human cattle, but in a ...
6
votes
1answer
1k views

Is it possible to dye cloth/leather with blood?

Is it possible to dye leather/cloth with blood without it fading, perhaps by using a sealant of some-kind? Note: This would be in an apocalyptic world where advanced chemical compounds would have ...
3
votes
1answer
234 views

What would be the implications of an ocean made from blood on the world? [closed]

In my world of Ulhe rather than having saltwater between continents the oceans are filled with the blood of a god. Besides being blue the blood has similar physical properties to human blood. It is ...
0
votes
2answers
3k views

How much raw pig's blood could a person swallow without getting sick? [closed]

I know there are some animals that you can safely drink from. Bear Grylls once drank the blood of an Elk, for example. In a story I'm writing, I'm including a birthday ritual where the sons and ...
10
votes
2answers
706 views

Bouncing Beads of Blood - Just how cold would it have to be?

My heroine has been stabbed - run through the abdomen by a foot-long dagger - and is bleeding to death. She is currently crawling toward her salvation through a very cold place. She is magically ...
11
votes
3answers
370 views

Could an organism have several oxygen transport proteins?

Can an organism have several types of oxygen carriers in its blood? Note that I am not asking how the creature could have evolved, that is too much sci-fy, genetically engineering or Deus Ex Machina ...
28
votes
14answers
6k views

Why would a blood transfusion of midiclorians not make my force abilities stronger?

Midichlorian's are chemical compounds found within every living cell that forms the basis between the connection life and the Force. Without midichlorians, life would be impossible. The amount of ...
2
votes
2answers
184 views

How long a human being could live with stem cells?

I once saw an experiment with mice, where they connected the bloodstream of a younger mouse to the bloodstream of an older mouse. And the older mouse became "younger", or at least healthier. If I ...
2
votes
2answers
136 views

Could DNA Survive in Outer Space?

In my story the inhabitants of Earth are near extinction. They want to make a capsule of a bunch of human DNA and blast it toward the Andromeda galaxy. They take 1 oz of every blood type still living ...
13
votes
7answers
3k views

Would it be possible for mammals to evolve blue blood?

Ever since I found out about the green blooded skink, I have wondered if it's possible for other blood colours to evolve among vertebrates, specifically blue in mammals.
26
votes
7answers
12k views

How can a person be kept alive while being periodically drained of blood?

I have invented a large machine that allows me to create monsters out of blood. These monsters are called golems and are very powerful. My plan is to produce a large number of them to include in my ...
11
votes
2answers
2k views

Human Blood Reactivity on an Alien Species' Skin

What would be a valid reason for human blood/sweat/body fluids being toxic/harmful/caustic to an alien species' skin? What would the aliens' organic biochemistry be like and what would their DNA be ...
6
votes
2answers
299 views

Which hydrogen halide to have in blood to replace water?

So I want to have an alien creature on a planet with a halogen atmosphere. It will have to be at a temperature where the hydrogen halide is liquid or solid. This hydrogen halide I would have as the ...
6
votes
4answers
761 views

Can telekinesis be used to stop someone from bleeding to death?

So let's say someone has telekinetic powers. He can move a bunch of things at once with his mind as long as the objects aren't too heavy. One day he's walking through a dark secluded alleyway and, oh ...
10
votes
5answers
2k views

Alternative elements for oxygen transport in an alien blood

I am designing an alien civilization for a story, and I am currently in the biological part. They will be oxygen breathers, so they will need to have that oxygen delivered inside their bodies, and I ...
2
votes
1answer
257 views

What cost to creating vampires [closed]

Assume a world in which vampirism is totally unlike how it is usually portrayed in Bram Stoker's Dracula, Anne Rice novels, True Blood etc. Instead it's somewhat analogous to a disease where the ...
26
votes
5answers
6k views

How reflective is blood?

If you were on a raft in say, an ocean of blood, and it was very still, would you be able to see the stars of the night sky reflected in it? Would you be able to see your own reflection? How far down ...
0
votes
1answer
158 views

What would the pros and cons of self propelled blood be (by any process) [closed]

Self propelled blood has been used many time in fiction to explain why rival characters cannot be killed. An example would be a manga named The Throne of Super Man (Choujin Sensen). In the manga ...