the products of cell-free atp incorporation mediated by cytoplasmic fractions prepared from unfertilized sea urchin eggs , anucleate egg halves , nucleate egg halves , emetine-treated fertilized eggs , and four-cell embryos have been characterized to determine to what extent the polymers synthesized are poly ( a ) and to assess the size distribution of the primers adenylated .
C0007634
the
C0010834
cytoplasmic