LIGATION OF THE INFERIOR VENA CAVA.
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Biomedical subjects
Publications and source records attributed to W J BURDETTE.
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Five fractions of the growth and differentiation hormone, ecdysone, separated from extracts of Bombyx have been detected by bioassay. Three of these have not been described heretofore.
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The amount of ecdysone extracted from Bombyx mori rose precipitously immediately before, and fell immediately after, transition from the larval to the pupal stage, and thereafter a secondary rise in titer was observed. These observations correlate very well with physiologic sequences of metamorphosis, critical period, and oxygen uptake.