Word Count : 498

---

Drugs can be derived from multiple sources, each offering unique chemical entities that can be developed for therapeutic use. The primary sources of drugs include natural, synthetic, and semi-synthetic origins. Natural sources encompass plants, animals, and microorganisms. Plant-derived drugs have historically been significant, with compounds like morphine from *Papaver somniferum* and quinine from *Cinchona* bark being classical examples. Animal sources contribute biologically active substances such as insulin from pancreatic extracts and heparin from porcine intestinal mucosa. Microorganisms, particularly bacteria and fungi, are valuable for producing antibiotics like penicillin and streptomycin. Semi-synthetic drugs are chemically modified derivatives of natural compounds, ___ ___ _______ _____ __________ _____ _______.
________ ________ ______ ____ ________ ________ _________ _________ ____ _____.
____ _________ ___ ______ __________ ______.
_____ __________ ________ ____ _____ ______ ____.
____ ___ ____ ___ ____ _________ ____ ___ ___ ____ ____ _______.
_____ ___ ______ __________ ______.
_________ ___ ________ _____ ________ ______.
____ _________ __________ ____ ____ _____.
___ ____ __________ _________ ________ ________.
______ _______ _____ ________ ___ ________ ________ ________ _______ ______ __________ ________.
_______ _____ ______ ___ _________.
________ ________ _____ _______ ________.
________ ______ _______ _________ ________ __________ ________ ____.
_________ _______ _______ ___ ___ ________ _________.
_________ ____ ______ ________ ___ _________ _______ _________ ____ ______ _________.
______ _________ ___ ___ _____ __________ _______ ____.
_____ ______ _________ _______ _______ _______ ________.
_________ ______ ______ _____ _________ ____ _______ ____ _______ ___.
_____ _______ ___ ______ ___ ____ ________.
________ ____ _________ ____ ___.
_________ ________ _______ ______ ___ ____ ______.
_________ ___ _______ ___ ________ ____ ______ _____ ___ ___ ____.
___ ________ ___ ________ _______ __________ ________ _______ ____.
___ ________ ________ ____ _____ ________ ________.
____ _______ _________ ______ ____ _____ ___.
____ _______ _________ _____ _________ _______ __________ ________ __________ ________.
_______ _________ _______ ________ _______ _________ _______ _____.
________ ___ ___ _____ _________ ___.
__________ ___ ________ _________ ___ _________ ___.
_____ _________ ____ _____ __________ ___ ___ _____ _________ ___.
_________ _________ _____ _______ _______ ____ _____ _____ _________ _______ ___.
___ _________ _____ ____ ________ ______ ______ _______ ________ __________ _______.
___ ______ ____ ____ _________ ____ _______ _______ _____.
________ _________ __________ _________ ________ _______ _____.
___ _____ ___ ____ ____.
______ ______ _________ _________ _____ ____ ___ ______ ___ _____.
___ ________ ______ ________ _______ ______ _______ ___ ______.
_______ ____ _________ _____ _________ _____ ____.
______ _____ ________ _________ _______ ______ ________ _____ _______ _________ ________ ___.
__________ __________ _________ ________ _________ ____ ____.
___ ___ ____ ________ _______ ____ _______.
______ _______ ______ ___ ______ ______ ________ __________ _____ _____ ________.
__________ ____ _____ ______ __________ ________.
_______ _____ _______ ____ ______ _____.
_________ ______ ______ ________ ________.
__________ _____ ___ _____ ___ _____ _________.
________ ___ ____ _______ ____ _________ ______ _________ ______ __________ _____ _______.
_______ ____ ____ _____ ________ _________ _____ _____.
_____ ______ _________ ____ ________ ___ ______ ______ _____.
_______ _____ _____ ____ ____ _____ ___ _______.
Get Full Answer on WhatsApp