Search found 4 matches

by Frattoe
Wed Sep 21, 2016 10:12 am
Forum: Physiology
Topic: Why does brain has ventricles?
Replies: 1
Views: 7669

They are vestigial structures. In origin, during embrional development, the future CNS is represented by a tube, the neural tube, firstly delimited by a single cell layer. Successively the grey and white matter of brain and medulla grow from the thickening of that single cell layer all over the neur...
by Frattoe
Wed Sep 21, 2016 10:01 am
Forum: Microbiology
Topic: Is an effective vaccine against TB is possible?
Replies: 5
Views: 10525

The problem concerning TB is that bacteria resist to the cellular killing. So the damages concerning lung tissue could be surely reduced by a previous selection of th1 cd4 clones responsive to MT antigens, but even that way the vaccine hasn't the possibility to totally avoid inflammation and followi...
by Frattoe
Tue Sep 20, 2016 9:31 am
Forum: Physiology
Topic: QRS complex
Replies: 6
Views: 24335

Re: QRS complex

It has been a big struggle for me, too. You have to imagine the ecg as a picture of heart axis referred to the direction of the segments linking electrodes. Just remember that you are spotting an electric wave moving across sensors, so what has to be positive and what to be negative is just a conven...
by Frattoe
Tue Sep 13, 2016 9:21 am
Forum: Physiology
Topic: Simultaneous activation of humoral and cell-mediated immunit
Replies: 0
Views: 6270

Simultaneous activation of humoral and cell-mediated immunit

Hello to all, I'm new of the forum and I hope to post the topic in the right section. I am studying microbiology in a medicine course, and I previously studied immunology. I was thinking about the fact nearly all vaccinal preparations towards viruses aim to form antibodies directed against the antig...