Natural fiber exoskeletons of insects and arthropods. In shells and exoskeletons, the chitin fibers contribute to their hierarchical structure. In nature, pure chitin (100% acetylation) does not exist. It instead exists as a copolymer with chitin's deacetylated derivative, chitosan. When the acetylized composition of the copolymer is over 50% acetylated it is chitin. This copolymer of chitin and chitosan is a random or block copolymer. Chitosan is a deacetylated derivative of chitin. When the acetylized composition of the copolymer is below 50% it is chitosan. Chitosan is a semicrystalline “polymer of β-(1-4)-2-amino-2-deoxy-D-glucose”. One difference between chitin and chitosan is that chitosan is
Master of Pharmacy Industrial Pharmacy, Bulk Drugs, Pharmacology, Pharmaceutics, Pharmacognosy, Pharmaceutical Biotechnology etc.: 1. Department of Pharmacy, University of Development Alternative (UODA) 2. Faculty of Pharmacy, University of Dhaka 3. Department of Pharmacy, Jagannath University 4. Department of Pharmacy, State University of Bangladesh The post graduate M.Phil program is offered in Pakistan instead of Master of pharmacy in four disciplines, namely, Pharmaceutics, Pharmaceutical Chemistry, Pharmacology and Pharmacognosy. A new discipline Pharmacy Practice is also introduced by some universities. In Kenya, the School of Pharmacy, University of Nairobi, offers three Master of Pharmacy degrees: These are 2-year Master's degree programs that have both taught