Abstract
Summary
Undecalcified bone sections of rabbits sacrificed at intervals between one hour and 3 weeks following Ca45 administration were treated in calcium acetate solutions. This procedure was designed to determine what portion of Ca45 remains on crystal surface of bone as a function of time following administration. The data are interpreted as indicating that recrystallization and crystallization processes are removing calcium to non-exchangeable positions at extremely rapid rates. At one hour following Ca45 administration, 1/2 of the isotope fixed in bone is no longer available to removal by ion exchange technic.
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