The Seasonal Fluctuation of the Antimicrobial Activity of Some Macroalgae Collected from Alexandria Coast, Egypt

摘要: Infectious diseases are a major cause of morbidity and mortality worldwide (WHO 2004). Synthetic drugs not only expensive but also often with adulterations side effects. Therefore, there is need to search for new strategies control microbial infections (Sieradzki Tomasz 1999). Pharmaceutical industries increasingly recognizing the importance compounds derived from soil plants other sources such as marine organisms (McGee 2006).