THE MOBILIZATION OF CALCIUM DURING DEVELOPMENT
- 1 June 1934
- journal article
- research article
- Published by University of Chicago Press in The Biological Bulletin
- Vol. 66 (3) , 351-356
- https://doi.org/10.2307/1537389
Abstract
Ca as CaH(CO3)2 is demonstrable in the shell-membranes of hen''s eggs after 7 days of incubation. This fact is an essential link in the evidence that proves transference of Ca from the shell to the developing chick. The percentage of Ca in individual eggshells remains essentially constant during incubation; but, since the shells lose weight, such constancy implies a loss of both Ca and organic substance. In Rhode Island Red eggs, the Ca lost by the shell is of the order 131 mgm. between the 7th and 19th days. Ocular proof of the removal of Ca from the shell was secured by rendering visible the erosion grooves left by allantoic blood-vessels.This publication has 3 references indexed in Scilit:
- Cultivation of the chick embryo in an opened eggThe Anatomical Record, 1931
- The effects of breed on the growth of the chick embryoJournal of Morphology, 1930
- Effect of humidity on the growth, calcium metabolism, and mortality of the chick embryoJournal of Experimental Zoology, 1929