"Elisa." . . "Aids serodiagnosis Metodos." . . "Sindrome de inmunodeficiencia adquirida Diag." . . . . . . . . . . . . "Estudio en pacientes con diagnostico serologico de infeccion por VIH-1 indeterminado" . . . . "Western blott is the technique most frequently used to determine the presence of HIV-1 antibodies. However, some patients remain with an indeterminate diagnosis for HIV-1 according to the technique. We followed 8 such patients for 2 18 months. Immunologic studies included standard ELISA, immunofluorescence and Abbott anti-p-24 ELISA. We found selective reactivity for certain viral proteins such as isolated p24,p24 plus p51 or p55, gp41 plus gp120, p17 plu p24 and p25 (AU)." . "Blotting, western." . . . .