No abstract

Carbohydrates that are used in fermentation media were screened for sporogenic activities on Bacillus cereus, B. subtilis, and B. megaterium. Out of the 15 carbohydrates tested, d-xylose (0.5%) in nutrient broth exerted maximum sporogenic stimulation on the test organisms. In shake culture experiment with B. subtilis the sporogenic action of xylose was evident even during the active multiplication of the organism in the medium.

No abstract

Summary. By cross matching the bloods of eighteen rabbits, the relative blood group pattern was determined. Further, by using three typing sera (anti-A, -D, and -F sera) the presence of these antigens on red cells was determined. The agglutination pattern of the sera of the eighteen rabbits with spermatozoa from seven rabbits of the group and the absorption of positive sera with red cells and spermatozoa showed that no common antigens existed between red cells and spermatozoa. The absence of common antigen between red cells and spermatozoa in rabbits was further confirmed by mixed agglutination of these two kinds of cells using natural haemagglutinins as well as specific blood typing immune sera.