After anoxia has occurred, what causes a cell (say a brain cell) to die? It seems that if the problem is simply a lack of oxygen, a few rescue breaths should fix it, like refueling a car that has run out of gas. What causes necrosis to be permanent?
Does body mass and size influence the time before irreversible brain damage?
Why is memory affected by age? Is it actual cell loss?
Why do blood clots form in hospital patients or patients who are on bed rest? Is there a chemical change?
Are there special genetic differences between a benign tumor and metastatic cancer that we could test for?
What makes some tumors spread whereas others stay benign?
Is it true that mosquitoes prefer biting people of one blood type over another?
If genes can be transplanted from animals to humans, why can’t the gene that produces insulin be transplanted from an animal to a patient with diabetes for a cure?
Does the HIV virus infect only T helper cells or can it cross the membrane, and infect, other cell types?
How does aspirin work to bring down a fever?
