Cell wall for higher growth rates in diatoms. In brown algae, phlorotannins may be a constituent of the cell walls. The group Oomycetes, also known as water molds, are saprotrophic plant pathogens like fungi. Until recently they were widely believed to be fungi, but structural and molecular evidence has led to their reclassification as heterokonts, related to autotrophic brown algae and diatoms. Unlike fungi, oomycetes typically possess cell walls of cellulose and glucans rather than chitin, although some genera (such as "Achlya" and "Saprolegnia") do have chitin in their walls. The fraction of cellulose in the walls is no more than 4
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,