Which is used as an immunosuppressive agent in organ transport?

The first antibiotic was discovered accidently by __$A$__ while working on  __$B$__.

Wine is prepared by fermentation of grape juice by

Chloramphenicol and erythromycin (broad spectrum antibiotics) are produced by

Read the following statement having two blanks ($A$ and $B$).

A drug used for ___$A$___ patients is obtained from a species of the organism ___$B$___ .

The one correct option for the two blanks is

Select the microbe which is the source of ‘clot buster’ enzyme.