the type-specific gag gene product ( p12 ) from balb : virus-2 and nzb-x-mulv was used in competitive radioimmunoassay , and sjl-rcn-x-mulv was found to be more closely related to balb : virus-2 ( mulv-x alpha ) than to nzb-x-mulv ( mulv-x beta ) .
C0017279
gag gene product
C0042776
virus