Chitin Chitin Chitin (CHON) ( ), a long-chain polymer of "N"-acetylglucosamine, is a derivative of glucose. It is a primary component of cell walls in fungi, the exoskeletons of arthropods, such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulae of molluscs, cephalopod beaks, and the scales of fish and lissamphibians. The structure of chitin is comparable to another polysaccharide - cellulose, forming crystalline nanofibrils or whiskers. In terms of function, it may be compared to the protein keratin. Chitin has proved useful for several medicinal, industrial and biotechnological purposes. The English word "chitin" comes from the French word
Doctor of Pharmacy holders to pursue an academic career by enrolling masters and doctorates programs (MSc and PhD) in several scientific fields (pharmaceutical technology, pharmacokinetics and biopharmaceutics, biomedical sciences, cosmetics & pharmaceutical industry, pharmaceutical and organic chemistry, physical chemistry, food sciences, pharmacology, toxicology, public health, etc.). Masters usually lasts 1–2 years and PhD's no less than 4 years. In summary, in Spain an entry-level pharmacy degree lasts 5 years and a "Hospital Pharmacy Specialist" needs 9.5 years of education and/or training. Hospital Pharmacy Residents are paid during their residency period. There are other residencies available to pharmacists such as Medical Biology, Clinical Biochemistry,