At this age, the cottontails still cannot live without motherâs milk. 3 day old cottontail (right) next to 14 day old cottontail (left) Seven to Nine Days Old: Similar to a 4-5 day old cottontail, there should not be too much difference at this stage. Eyes should be beginning to open and may look like little slits.
In doing so, the virus destroys the ability of the infected cells to do their job in the immune system. The body then loses the ability to fight many infections. When a person with HIV has an extremely low number of CD4 cells or certain rare infections, doctors call this stage of disease AIDS.
Understanding the Immune System. ...) that can fight different diseases. As HIV disease progresses, the number of CD4 cells drops. The first CD4 cells that HIV attack s are the ones that specifically fight HIV. Some type s of CD4 cells can disappear, leaving gaps in the immune ...