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Mean weights of chick embryos correlated with the stages of Hamburger and Hamilton
Author(s) -
Davis J. E.,
Garrison Norman E.
Publication year - 1968
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051240105
Subject(s) - biology , embryo , anatomy , andrology , zoology , microbiology and biotechnology , medicine
A total of 1125 normal chick embryos, representing 25 each of the 45 stages of Hamburger and Hamilton, were removed, fixed in Bouin's solution, stored in 70% ethanol and weighed with a semi‐micro analytical balance. Entire blastoderms of stages 1–8 were weighed, whereas only embryos‐proper were weighed in stages 9–45. As a consequence, results constituted two groups, each of which showed a geometric rate of growth marked only by minor deviations which were related to specific events of normal growth and development.