Which one of the following causes plague
Salmonella typhimurum
Trichinella spiralis
Yersinia pestis
Leishmania donovani
‘Itaria-itaria' disease is caused by
Which one of the following is not correctly matched?
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
Alexender Flemming in $1929$ discovered