Dr Stamen Grigorov

• Health

Stamen Grigorov: Google Doodle celebrates the 142nd birthday of a Bulgarian physician who discovers Lactobacillus bulgaricus essential to yogurt and tuberculosis vaccine

Google celebrates the 142nd birthday of a famous Bulgarian physician and microbiologist Dr. Stamen Grigorov (Д-р Стамен Григоров), who found… Read More