Dawson: first with both 'in vitro' DNA & 'in vivo' Penicillin

Because 'in vitro' research (inside glass test tubes) and 'in vivo' research (inside the body) are considered the polar opposites of each other, it is the rare scientist indeed who scores a notable first in both fields.

So consider the fact that for billions of years DNA had worked its magic solely inside the body, until 1929 when Dr Henry Dawson first put it to work inside a glass test tube (in vitro) : dawning the age of direct genetic modification.

Or that for millions of years penicillin had worked its magic solely outside the human body, until 1940 when Dr Henry Dawson first put it to work inside the human body (in vivo) : dawning the age of life-saving systemic antibiotics.