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Polypeptide components of peripheral nerve myelin prepared from sciatic nerves of mouse, rat, rabbit, cat, guinea pig, monkey, dog and chicken were analyzed using a 20% polyacrylamide slab-gel electrophoresis system. Using this technique, we have demonstrated that there are at least two polypeptides present in the region of P1 protein (mol. wt. 18,000 and 16,000), and two closely moving components in the region of P2 protein (mol. wt. 13,500). A polypeptide (mol. wt. 10,500) is present in significant amounts only in mouse sciatic nerve myelin. Staining with periodic acid-Schiff reagent shows that in addition to P0 protein (mol. wt. 28,000), the major glycoprotein of peripheral nerve myelin, there are several minor glycoprotein components in both the high and low molecular weight regions.

The pattern of gastro-intestinal (GIT) and Respiratory tract (RTI) diseases in rural areas of the Varanasi district, U.P. (India) was studied from the outpatient (OPD) attendance between July 1985 to June 1986. Out of a total of new patients, 19.71% had respiratory diseases in contrast to 27.9% with GIT disease. A decreasing trend was observed in attendance rates as age advanced. The difference in age distribution of males and females was statistically significant. The attendance rates for GIT diseases were higher in female (29.16%) than in males (25.16%) whereas in RTI, the rates were higher in males (19.39%) than in females (18.77%). The attendance rate was found to be higher in rainy season (23.59%) followed by summer (14.50%). Diarrhoea (15.44%) and upper (URTI) respiratory tract infection (19.93%) occupied the major recorded episodes.