Attachment of HIV to a CD4+ T-helper cell: 1) the gp120 viral protein attaches to CD4. 2) gp120 variable loop attaches to a coreceptor, either<unk>  or CXCR4. 3) HIV enters the cell. C-C chemokine receptor type 5, also known as<unk>  or CD195, is a protein on the surface of white blood cells that is involved in the immune system as it acts as a receptor for chemokines. In humans, the<unk>  gene that encodes the<unk>  protein is located on the short (p) arm at position 21 on chromosome 3. Certain populations have inherited the Delta 32 mutation, resulting in the genetic deletion of a portion of the<unk>  gene. Homozygous carriers of this mutation are resistant to M-tropic strains of HIV-1 infection.
CCR5
CCR2
CD137
LYRa11
CDV3 
LPAR6
FITkit
CD44