michel_mr

hello all,i am just wondering how our immune system doesnt trigger any immune reaction against all the other components of the blood and just considering the ABO system and Rh system compatibility between the donnor and the recipient,however in the blood there are WBCs with different HLA than the reciepient. another question why sperm are not considered as foreign organism once they enter the female body?

i am sorry,i meant why the right cerebral hemisphere controls the LEFT part of the body.sorrryyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

hello all,i am just want to ask is there any benefit for that the right cerebral hemisphere controls the right part of the body and vice versa?

hello,i am curious about the physiological thing that happens when we sleep very late at night,for a long period , a black color appears around eyes!!!!! why?

thx u very much ,

my wife suffer from a pain around her eyes and she always think that this is sinusitis. can anyone tell me what are the symtoms for such a case

i am oharmacist and i want to know if this is true or not. can a diabetic person type I or II eat honey since it doesnt contain glucose,but just fructose? thank you very much for you answers

hello all,i dont know if this is the right place to ask this question but anyway i want to know if it is possible that a person would be affected by both scikle cell anemia and thalassemia at the same time,although they are both abnormality in hemoglobine beta ?

cells during metaphase of mitosi dont have nuclear membraneand the are in the cytoplasm . thx but i am still confusing:eek:

1- take sample of blood then after culturing WBC we stop division at metaphase by colchicine. then we add hypotonic solution to rupture cell membranes,after we take few drops on slide with dyes and photo ...... it is from a book and i cant get it at all,i wish some lab doc or technician can help me. hope u can

thx but i am sorry i dont get it,when we prepare the process we take wbc in culture and we rupture their membrane by hypotonic solution so we could have access on chromosomes then we take few drops on slide.......... so i can get it till now how we could we determine the trisomy if we are using many cells in suspension

thx my freind but really this is not my question let me ask the question again.1- i am not speaking about na /k pump,there is voltage dependent Na and K gates,and these gates open or close during action potential. 2- my question is why when K GATES open the Na ions wont cross it although they are smaller in size

we know that karyotype is used for example to find trisomy right? so how we can be sure about it if the sample we take from the fetus or adult may contain more than one cell,so it contains more than 2 chromosomes from one pair,can any one help me ?

hello my freinds ,this is my first visit and i am really need your help. in neurophysiology we know that we have Na ions and K inos gates,but why the Na ions cannot pass through the K gates although the are smaller in size with respect to these gate?