Search found 142 matches

by iri_black
Mon Jul 25, 2005 7:16 am
Forum: Human Biology
Topic: erythroblastosis fetalis
Replies: 75
Views: 50288

And thus the release of some mediators of inflammation, including histamine.
And anti-histaminic drogs are the only drugs that can help....in a way :(
by iri_black
Mon Jul 25, 2005 7:04 am
Forum: Genetics
Topic: siRNA
Replies: 4
Views: 5597

siRNA

Can anyone tell what siRNA is? :(
I'm afraid I never heard of it :cry:

Thanks
by iri_black
Sat Jul 23, 2005 9:36 am
Forum: General Discussion
Topic: interferon
Replies: 44
Views: 26102

Following phagocytosis of a pathogen, fragments of the pathogen are complexed with MHC proteins and displayed on the surface of the macrophage or dendritic cells of the innate immune system. If the cell encounters a dangerous pathogen, a co-receptor called B7 is produced. This is a crucial step for ...
by iri_black
Sat Jul 23, 2005 5:47 am
Forum: Human Biology
Topic: erythroblastosis fetalis
Replies: 75
Views: 50288

Ok, sorry about that :( .
But can you answer my question? Why some people are more sensitive to allergens?
by iri_black
Fri Jul 22, 2005 3:56 pm
Forum: Human Biology
Topic: erythroblastosis fetalis
Replies: 75
Views: 50288

IgE act as the fast response allergic because it's contained in basophyll . Related to the IgE activity, why some people are more sensitive to alergens than other? Does this have to do whith the quantity or the activity of basophylls. Some allergies can be kept under control with certain vaccins. D...
by iri_black
Fri Jul 22, 2005 2:56 pm
Forum: General Discussion
Topic: interferon
Replies: 44
Views: 26102

Ok, thank you very much. :)
I have just discovered this site. It was my lucky day I guess, there's so much to learn... :shock: :o :D
by iri_black
Fri Jul 22, 2005 10:20 am
Forum: General Discussion
Topic: interferon
Replies: 44
Views: 26102

Of course, that's one of their purposes. But still, there is an exception here and there, that sometimes tumor cells produce something to "cover" their environment so IFN will not work to eliminate them. Do we know how that "cover" works? My first thought was that it's something in the membrane of ...
by iri_black
Fri Jul 22, 2005 6:49 am
Forum: Genetics
Topic: What is siRNA
Replies: 0
Views: 2700

Can you tell me what siRNA is?

Thank you.
by iri_black
Fri Jul 22, 2005 6:44 am
Forum: General Discussion
Topic: Biology or Chemistry
Replies: 60
Views: 32209

I had to make the same choice some 4 years ago, and I choosed biology. I don't regret it. I think biology means so much more that chemistry(sorry, it's just my opinion :) ).
I think that, in time, you can find many fields of interest in biology that you haven't discovered yet.
by iri_black
Fri Jul 22, 2005 6:19 am
Forum: General Discussion
Topic: interferon
Replies: 44
Views: 26102

interferon is that IFN is a kind of cytokine produced by virus-infected cells, or other intracellular infection. It is used to attrack effector T-cells, especially CD8+ or CTL to kill those cells. Furthermore, it acts to prevent further spreading of the infection. Considering this, do you think int...