the cellular constituents of pelleted fractions , as identified by electron microscopy , were membranes and membranous organelles ( fraction a1 ) , microsomal ( a2 ) , cytoplasmic ( a3 ) , large refringent granules ( b1 ) , small refringent granules ( b2 ) and a detergent-soluble fraction ( b3 ) .
C0007634
cellular
C0010834
cytoplasmic