The presence of inorganic or organic iron in the growth medium induces the production of a reddish-violet pigment in Micrococcus violagabrielhe. This pigment protects the organism against short exposures to ultraviolet (u.v.) radiation of wavelength below 300 mp. The presence of iron also increases the degree of recovery of the normally white organism after such irradiation. Anaerobic growth re...

the major objective in endodontic therapy is to disinfect the entire root canal system. this requires that the pulpal content be eliminated as sources of infection. this goal may be accomplished by mechanical instrumentation and chemical irrigation, in conjunction with medication of the root canal between treatment sessions. microorganisms and their by-products are considered to be the major ca...

herbal medicine can be a valuable source of assistance for traditional medicine. there are a number of herbs that can be used in conjunction with modern medicine. herbs can also be taken to aid recovery from serious diseases. although one should never aim to treat diseases such as cardiovascular disease solely with herbal medicine, the value of herbs used in tandem with modern medicine cannot b...

conclusions potato peels were proved to be potentially useful substrates for biosurfactant production by b. pumilus dsvp18. the strain possessed a unique property to reduce surface tension of the media from 72 to 28.7 mn/m. in addition, it showed a stable surface activity over a wide range of temperatures, ph, and saline conditions and had strong antimicrobial activity. this potential of the id...

treatment of tuberculosis was an obstacle for ages. in spite of good drugs, the disease is not under control. thus, the need for more drugs existed. searching for a new drug demands much investment on the time, money and human resources. there are many drugs with antitubercular action that are discovered and explored in the last century. the most common drug, isoniazid, is now a frontrunner ant...

background: with increasing use of antibiotics, the number and type of microbial resistance to antibiotics have been raised and at result the need for synthesis of new antimicrobials or acquire new sources of antimicrobial is indisputable. in this study the antimicrobial effects of the flowering aerial parts of glaucium vitellinum and gaillonia aucheri were investigated. m aterials and methods:...

Antifungals have always been considered as one of the astonishing discoveries of the 20th century. This is correct, but the real marvel is the development of antifungal resistance in hospitals, communities, and the environment concomitant with their use. Fungal infections have emerged as an important clinical threat, with significant associated morbidity and mortality.  This study is desig...

diet can play a vital role in cancer prevention. nowadays the scientists are looking for food materials which can potentially prevent the cancer occurrence. the purpose of this research is to examine anti-mutagenic and apoptotic effects of apigenin in human lymphoma cells. in present study human chronic lymphocytic leukemia (eheb cell line) were cultured in rpmi 1640 (sigma), supplemented with ...

cough is a common reason for seeking medical advices for children. cough is a natural defense mechanism and can frequently occur in healthy children and can be increased by urban living and polluted cities. thus, previous history, cough exacerbations factors and quality of cough are very helpful in diagnosis of pathological cough. there are different definitions for chronic cough. in this artic...