Volume 34, Issue 5
November 1951, pages 227-271
pp 227-241 November 1951
pp 242-247 November 1951
A procedure has been described for preparing hæmoglobin-free erythrocyte protein of the chick and the malarial parasite protein (P. gallinaceum) for use as test antigens.
Schultz-Dale technique has been used to discriminate between the two proteins and by this procedure they are qualitatively found to be anti-genically similar.
This may be one of the reasons to explain why the immunity is not a well-defined phenomenon in malarial infections.
pp 248-255 November 1951
pp 256-257 November 1951
pp 258-266 November 1951
Observations have been made concerning the effect of a single dose of thyroxin at a level of 4 mg. per kg. of body weight on the changes in the liver protein and nucleic acids at definite intervals in C-57 strain of mice.
Except for a marked drop in the liver RNA 6 hours after thyroxin administration, mobilisation of liver protein and nucleic acids take place during a period of active metabolism (18–120 hours after thyroxin administration). Some clear changes in the liver DNA have been also observed during the period of active metabolism.
There appears to be no quantitative correlation between the mobilisation of protein in the liver and loss of carcass protein, 96 hours after the administration of thyroxin.
The significance of the observed changes has been presented without prejudice or postulate.
pp 267-271 November 1951
Excretion of small but definite and measurable amounts of ascorbic acid takes place during the preliminary period of soaking prior to germination of leguminous seeds. There is no secretion of the vitamin into the surrounding medium during the subsequent normal germination period.