The cells which suppress the entire immune system from its attack in the same body are known as
Helper $T$-cells
Killer $B$-cells
Suppressor cells
Suppressor $T$-cells
Match the incorrect pair
‘Plague' is transmitted by
Lymph nodes
Except skin, other physical barriers which also helps to prevent the entry of the microorganisms are
$I.$ mucus coating of the epithelium lining the respiratory
$II.$ gastrointestinal tracts
$III.$ urogenital tracts
Choose the correct option
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with