BLOOD:

Landsteiner discovered that O,A,B and AB are 4 types of blood groups.
'O' is called universal donor and AB is universal acceptor.

Comments

Popular posts from this blog

ಶಿಕ್ಷಕರ ಸೇವಾ ಪ್ರಮಾಣ ಪತ್ರ.

NMMS 2019 PAPER-1, ಮಾನಸಿಕ ಸಾಮರ್ಥ್ಯ ಪರೀಕ್ಷೆ (GMAT)