HELP FAST 8. A CD4 count that is below which amount classifies an infected person as having AIDS?
1.600 cells per mm3
2.200 cells per mm
3.800 cells per mm
4.400 cells per mm

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer