Alanna, is it necessary to have images of bananas when discussing the scourge of HIV and investigation into surgical prophylaxis? It seems a bit flippant for such a serious matter.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2064110
"A suspected entry route for HIV turns out to be a dead-end, report Lot de Witte, Teunis Geijtenbeek (VU University Medical Centre, Amsterdam, Netherlands), and colleagues. Langerhans cells, rather than transmitting the virus to T cells, trap HIV-1 and thus act as a barrier to infection."
http://www.nature.com/nm/journal/v13/n3/abs/nm1541.html
http://www.futuremedicine.com/doi/full/10.2217/17460794.4.1.11?cookieSet=1
I appreciate that you are looking into this deeply, Alanna. Countless lives are at stake if the international community reaches a faulty conclusion. Trying to help, we could make things worse and waste precious resources.