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CELL CYCLE IN THE PRIMITIVE STREAK AND THE NOTOCHORD OF EARLY CHICK EMBRYOS
Author(s) -
OZATO KENJIRO
Publication year - 1969
Publication title -
development, growth and differentiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 66
eISSN - 1440-169X
pISSN - 0012-1592
DOI - 10.1111/j.1440-169x.1969.00297.pp.x
Subject(s) - biology , mitosis , developmental biology , primitive streak , embryo , embryogenesis , microbiology and biotechnology , gastrulation
In respect to cell proliferation in early chick embryos, several investigations have been done by means of counting the number of mitotic figures, and they revealed the different mitotic activity in the different regions of the embryo (DERRICK, 1937; BELLAIRS, 1955 and 1957; EMANUELSSON, 1962, 1965). The present study was performed to investigate the cycle of the cells in the process of morphogenetic movement in early chick embryos, especially of cells immigrating through the primitive streak. For this purpose, besides counting the number of mitotic figures, autoradiographic observations were carried out on the embryos explanted on a nutrient medium containing "-thymidine.