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The phenotypes of a series of mutant human immunodeficiency virus type 1 proviruses with linker insertion and deletion mutations within the gag coding region were characterized. These mutants, with mutations in the matrix, capsid, and p2 coding regions, produced replication-defective virion particles with defects in the early steps of the viral life cycle.(More)
Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of purified incomplete particles of adenoviruses type 2 and 3 revealed that core proteins V and VII and capsid proteins VI, VIII, and X were absent in these particles, but they contained polypeptides not present in complete particles. Two types of incomplete particles were observed in the electron(More)
Immunostimulating complexes (ISCOMs) have been prepared from feline leukaemia virus (FeLV) envelope proteins. The ISCOMs were characterized biochemically in SDS-polyacrylamide gel electrophoresis showing the presence of proteins of estimated molecular weights of 15,000, 27,000 and 70,000. Immunoblotting showed that both the transmembrane protein p15E and(More)
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