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bio website jkadlubowska.tumblr.com
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visits member for 2 years
seen Feb 22 at 16:52

SAHM of two, including a one-in-a-million Krabbe boy surviving his 5th year in good health.

Molecular biology MSc. Pedagogy BA.

Wife of Tadeusz.


Jan
26
comment What prevents a pregnant woman's immune system from recognizing her fetus as nonself (and attacking)?
Right now I don't remember the full story, but part of it is that pregnant women are somewhat immunosupressed and there is something like a layer of NK cells around the placenta making sure nothing attacks it. Not very practical to adapt to organ transplants.
Jan
22
comment Why is the Hydra Biologically Immortal?
@shigeta now I have to search those sharks!
Jan
20
asked Why does yawning impair hearing?
Jan
12
answered What is the inbreeding coefficient for the female offspring of a sib-mating in a haplodiploid system?
Jan
7
revised Can positive and negative blood type of a couple lead to miscarriage?
This would be true only if the (+) parent BY DEFINITION was a heterozygote.
Jan
7
comment Can positive and negative blood type of a couple lead to miscarriage?
I would add one more thing - generally the longer they wait before trying again, the better chances fo a Rh+ foetus. Memory cells slowly die and in my country 5 years after last pregnancy with problems a Rh- woman's pregnancy is considered normal risk. Still - a specialist will tell you more and help your sister.
Jan
7
suggested suggested edit on Can positive and negative blood type of a couple lead to miscarriage?
Jan
4
revised Do animal cells have vacuoles?
added 311 characters in body
Jan
4
answered Do animal cells have vacuoles?
Jan
4
revised Why Do Ruminants Require A Multi-Compartment Stomach To Digest Food?
added 90 characters in body
Jan
4
answered Why Do Ruminants Require A Multi-Compartment Stomach To Digest Food?
Dec
24
comment Chromosome 2 fusion?
I'd really like to give you more than just one upvote.
Dec
22
comment Chromosome 2 fusion?
You are describing two processes - one of general fusion happening now and then throughout history (which is common) and one of specific fusion, that was supposed to happen at a certain time in human evolution history (which is not sure, but possible).
Dec
19
comment How many people are required to maintain genetic diversity?
I am no expert on dogs, but did learn a bit about in- and outreeding. Each dog breed is either open or closed. In a closed breed, only offspring of animals already belonging to this race belong to the race. In an open breed any animal that looks similar enough (or has other important traits, characteristic for the breed) can be a parent of a "breed" litter. Under certain circumstances (e.g. too few animals in the breed, too bad overall health of the breed) a closed breed can be opened and after the problem is solved, closed again.
Dec
18
answered How many people are required to maintain genetic diversity?
Dec
3
awarded  Critic
Dec
3
comment How much weight/volume do microbes occupy within the human body?
Just human intestines have over a kilogram of bacteria! A good enema will leave you 2kg lighter and that's mostly bacteria.
Nov
25
comment In a human, what non-germline cells have the highest/lowest mass?
Long human axons are up to 20um in diameter, their bodies are very small, so I think we can assume, that such a very long human axon is a long, thin tube of 20umx1m. This means it's volume is about 31,400,000um^3. If a large adipocyte is 0.2mm (200um, same source as previously) in diameter and a sphere, it is 4,190,000um^3. So yes, an extremely long axon is larger than a large adipocyte, but I could go on searching for a largest adipocyte known to science and I'm almost certain, that I could find something larger ;)
Nov
25
answered Is there any complex organism that is both autotroph and heterotroph?
Nov
23
comment In a human, what non-germline cells have the highest/lowest mass?
Quote: Definitely by mass @Rory M♦ – joseph_morris 2 days ago