Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

Questions tagged [hematology]

The study of blood, the blood-forming organs, along with blood diseases and their treatment.

Filter by
Sorted by
Tagged with
2
votes
1answer
1k views

Could bone marrow transplants make xenotransplants viable?

So the immune system doesn't calibrate (for want of a better euphemism) to recognize it's own cells until fairly well along in fetal development & the major components of the immune system (...
20
votes
3answers
6k views

Do animals other than humans have different blood types?

Humans have the ABO and Rhesus blood typing systems. I have two questions about it: Why have we evolved these blood types? Do other animals have different blood types as well?
32
votes
3answers
150k views

Why do mammalian red blood cells lack a nucleus?

How did the red blood cell in humans get to lose its nucleus (and other organelles)? Does the bone marrow just not put the nucleus in, or is it stripped out at some stage in the construction of the ...
5
votes
1answer
221 views

Any evolutionary explanation for human blood groups?

What is the explanation of people having blood types from an evolutionary perspective?
42
votes
3answers
77k views

Why draw blood from veins rather than arteries?

Why draw blood from veins rather than arteries? Is it more convenient or safer?
43
votes
4answers
31k views

Is there any advantage to one blood type over another?

All humans can be grouped into ABO and Rh+/- blood groups (at a minimum). Is there any advantage at all to one group or the other? This article hints that there are some pathogens that display a ...
7
votes
2answers
32k views

Why does the affinity of haemoglobin's for oxygen decrease at high altitudes?

My class 12 NCERT book says, Pg 226 The body compensates low oxygen availability by increasing red blood cell production, decreasing the binding affinity of haemoglobin and by increasing breathing ...
5
votes
1answer
3k views

Effect of 2,3-bisphophoglycerate (2,3-BPG) on haemoglobin

When 2,3-bisphophoglycerate (2,3-BPG) binds to haemoglobin, a higher partial pressure of oxygen is needed to bring about 50% saturation of with oxygen. What is the physiological significance of this ...
2
votes
2answers
3k views

What are the blood groups for human beings?

Human blood groups are of 4 types with negative and positive of each types (Wikipedia). But according to this forum thread there are some other types too: A+,A-,B+,B-,O+,O-,AB+,AB-,A1+,A1-,A2+,A2-,...
4
votes
1answer
105 views

What is the reason for 'microcytic' anaemia?

I know the causes for microcytic anaemia are Fe deficiency, prolonged inflammation, Thalessemia, Sideroblastic etc. All these logically point to a decrease in Haemoglobin synthesis - either Haeme or ...
2
votes
2answers
140 views

Are there endoscopic technologies for blood vessels?

Endoscopic procedures are used to look inside cavities like intestine, esophagus etc. Is it being used to look inside blood vessels?
22
votes
3answers
33k views

Why do people have antibodies against other blood types?

The ABO blood type divides each blood type according to whether they have the "A" and "B" antigen(s) (AB has both, O has none). People also have antibodies against the antigens they don't have (AB has ...
18
votes
5answers
19k views

Origin, or source, of rhesus negative in human blood

This is my first post here, so please be gentle. I recently learned that I have Rh- blood (I'm A-), and was idly looking into blood types on Wikipedia. I was surprised to find that relatively few (~15%...
14
votes
1answer
3k views

Does a blood transfusion cure disease?

Does transferring blood between two people also transfer all the white blood cells? Why can't AIDS victims with low t-cell count just get blood transfusions till they have more t-cells? Why can't ...
1
vote
2answers
3k views

Theranos blood test's Specificity and Accuracy?

I am studying the limitations of Theranos device. They have 238 documents in Google Patents Search (Inassignee as Theranos), here. Which patents are relevant for their device? They have 70 tests ...
8
votes
3answers
15k views

Presence of MHC on red blood cells

Do red blood cells have no MHC? (I have often heard that they do not.) If so why are they not destroyed by immune cells?
2
votes
1answer
607 views

Why do people perceive blood pressure as the force that moves the blood forwards (see details)?

For example "Veins contain a lot of valves because the blood pressure inside them is low.". This wouldn't make any sense unless if blood pressure was perceived as the force that drives the blood ...
9
votes
2answers
41k views

Can the mating of a couple with Rhesus positive and negative blood types result in miscarriage?

Can the combination of $+ve$ and $-ve$ blood groups of a couple be a cause of miscarriage in pregnancy?
5
votes
1answer
591 views

Does Blood Loss Shorten Telomeres?

If blood loss necessitates immediate cell division to replace lost cells, does the increase in cell division correlate to shortening of telomeres? Does it further cause the Hayflick Limit to be ...
5
votes
1answer
3k views

Is it possible to condition the body to reduce bruising?

I do combat sports, and in these sports there are a lot of hits that can cause bruising. I've found that, over time, physical conditioning can reduce and/or eliminate the bruising to the point where ...
2
votes
1answer
67 views

How do veins's valve pocket sinus tend to become hypoxic?

For context, this question relates to the formation of deep vein thrombosis as I read that hypoxemia in vein can trigger coagulation cascade and cause a thrombus to form in vein. I read that vein's ...