RESULTS ARD CORCLUSIONS: Data were collected from one group of
four animals with young oocytes, having a diameter after fixation
of 45-55 p0 A second group consisted of tissue from three animals
with large oocytes of a fixed cell diameter of 80-110 v. From
each animal 3 to 5 analyses were run and the mean values are
given in Table I, It can be seen that for the young cells there
is in all oases a striking similarity between the nuoleolar and
oytoplasmic RRA. For the older cells, on the other hand, the
nucleclar RNA compoeition differs markedly from that of the
cytoplasm, although in no case to the extent found by Vincent
(1952). Nucleoplasmic RNA is very unlike that of the other
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