Nunes, D F Activity of natural killer cells during HIV-1 infection in Brazilian patients. [electronic resource] - Revista do Hospital das Clinicas - 75-8 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0041-8781 Standard No.: 10.1590/s0041-87812001000300003 doi Subjects--Topical Terms: AdultCase-Control StudiesCell CountCohort StudiesFemaleHIV Infections--immunologyHumansImmunity, CellularK562 Cells--immunologyKiller Cells, Natural--immunologyMaleMiddle Aged