B vitamins has been recognized from the very beginning of vitamin research. Funk in 1911 first pointed out that yeast was a rich source of the beri-beri curative substance. Goldberger and Tanner (1925) introduced yeast in the treatment of pellagra. Goodall (1932) advocated its use in certain types of macrocytic ansemia. Various workers have shown that angular stomatitis and glossitis can be cur...

Magnetoresistance (MR), the change of a material's electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic of intense study for more than a quarter century. We report the observation of an unusual "butterfly"-shaped titanic angular magnetoresistance (AMR) in the nonmagnetic Dirac material, ZrSiS, which we find to be the mos...

Kala-azar or visceral leishmaniasis is usually associated with progressive emaciation in spite of the fact that the patients generally have a good, at times voracious, appetite and their diet is not often greatly restricted. Apart from emaciation, signs of avitaminosis, viz, xerophthalmia, Bitot's spots, glossitis, angular stomatitis, dryness of the skin, etc., have often been noticed by one of...

A 47-year-old African American female with a history of hypertension presented to the emergency room with dysphagia. Over a period of two weeks, the patient first noticed difficulty swallowing large chunks of food followed shortly by trouble swallowing liquids. She described pain in her oropharynx with eating and regurgitated both solids and liquids every time she ate. She had lost 10 pounds ov...