Artificial active immunity can be acquired from
Serious illness
Vaccination
Repeated exposure to the some microbes
Treatment with penicillin
Which of the following pairs is correct
Excessive dosage of cocaine causes
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 Its use was withdrawn in $1961$ because it resulted in phocomelia.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
The jaundice is a physiological liver disease. It is caused by a
Leprosy is communicated by