In mammals, histamine is secreted by
Fibroblasts
Histiocytes
Lymphocytes
Mast cells
Full forms : $LSD$
Thalidomide is a non-barbiturate sedative drug which was to be given to pregnant women. Its use was withdrawn in $1961$ because it resulted in phocomelia. This condition illustrates
Which disease is caused by a nematod
Wuchereria bancrofti is transmitted by