Which hormone was first to be discovered?

AIDS was first discovered in

DNA was first discovered by,

How was the first cell discovered?

What are antibiotics? How was first antibiotics discovered?Name two antibiotics produced by Streptomyces spp.

Gibberellin was first discovered from:

Deficiency of which hormone leads to diabetes isipidus?

Name first discovered hormone.

Name the first antibiotic to be discovered . Who discovered it?