CD4
T-cell surface protein
CD4 is a protein found on the surface of certain immune cells, particularly helper T cells.
These cells coordinate the body's immune response.
HIV targets CD4 cells, so CD4 count—the number of these cells per microliter of blood—serves as a key marker of immune system health in HIV patients: His CD4 count dropped below 200.
Protein bonded to carbohydrates
- bindingLegally or morally required
- membraneThin tissue sheet
- moleculeBonded atomic group
- interactionReciprocal action between parties
tropism · entry · fusion · attachment · MHC class II
One who aids another
- lymphocyteImmune system white cell
- thymusLymphoid organ maturing T-cells
- cytokinesImmune signaling proteins
- interleukin-2Immune system signaling protein
clonal expansion · white blood cells · immunosuppression · naive · memory · activation · differentiation · subset
Pathogen count in body
- AIDSImmune deficiency syndrome
- antiretroviralDrug blocking viral reproduction
- infectionPathogen invasion causing illness
- immunodeficiencyWeakened disease-fighting capacity
opportunistic · transmission · PrEP · undetectable · progression · monitoring · therapy · retrovirus
Outermost boundary layer
- monoclonal antibodyEngineered protein from cloned cells
- laboratoryFacility for scientific investigation
- diagnosticTest to identify problems
- fluorescentEmitting light when energized
glycoprotein
Protein bonded to carbohydrates
interaction · tropism · entry · fusion · attachment · MHC class II
helper
One who aids another
- lymphocyteImmune system white cell
- thymusLymphoid organ maturing T-cells
- cytokinesImmune signaling proteins
interleukin-2 · clonal expansion · white blood cells · immunosuppression · naive · memory · activation · differentiation · subset · proliferation
viral load
Pathogen count in body
- AIDSImmune deficiency syndrome
- antiretroviralDrug blocking viral reproduction
- infectionPathogen invasion causing illness
immunodeficiency · opportunistic · transmission · PrEP · undetectable · progression · monitoring · therapy · retrovirus · diagnosis
surface
Outermost boundary layer
- monoclonal antibodyEngineered protein from cloned cells
- laboratoryFacility for scientific investigation
- diagnosticTest to identify problems