Four layer discontinuous gradient for HIV.
Kakimoto
K
K
Ando
Y
Y
Yoshioka
A
A
D002499:Centrifugation, Density Gradient / Q000379:methods*; D006678:HIV / Q000302:isolation & purification*; D006801:Humans; D007315:Insemination, Artificial / Q000379:methods; D008297:Male; D013094:Spermatozoa / Q000821:virology*; D020858:Tissue and Organ Harvesting / Q000379:methods