My worst module this year is definately infection and immunity.
There is just so much of it. It takes me hours and hours to go through the lectures and by the time I’ve finished all the work for the week, monday rolls around again and we get more lectures and work. Fun :p
Anyway- The picture above is of the HIV virus. HIV infects CD4+ T cells (T helper cells) and leads to low levels of them which means that cell mediated immunity is impaired and people with the virus are susceptible to infections.