Probing the preformation of the α-particle in the α-decay process is a very attractive subject in studies of nuclear structure. Recently, this crucial α-preformation probability was empirically ...
Primordial germ cells (PGCs) give rise to the germ line in animals. PGCs are specified during embryogenesis either by an ancestral mechanism of cell–cell signalling (induction) or by a derived ...
THE German edition of Dr. Hertwig's discursive treatise—“Präformation oder Epigenese?”—was so fully reviewed in these columns shortly after it appeared (vol. li. p. 265, 1895), that it is unnecessary ...
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