BACKGROUND Hidrocystomas are benign tumors of apocrine or eccrine epithelium. They most commonly occur on the head and neck, especially periorbitally. Albeit rare, these adnexal tumors may present as pigmented lesions. PURPOSE To describe a patient with a pigmented eccrine hidrocystoma of his nose and to review the features of other individuals with pigmented hidrocystoma of the nasal epithel...

The identification, differentiation and classification of microorganisms have been subjects of research for many years. Recently, Fourier transform infrared (FTIR) spectroscopy techniques have gained attention in the characterization and classification of microorganisms based on biochemical profiles and cell structure characteristics. In the present study, the characterization and differentiati...

Pigments from bacteria, fungi, yeast, cyanobacteria, and microalgae have been gaining more demand in the food, leather, textile industries due to their natural origin effective bioactive functions. Mass production of microbial pigments using inexpensive ecofriendly agro-industrial residues is current research low cost, origin, waste utilization, high pigment stimulating characteristics. A wide ...

The taxonomic position of four newly isolated marine, heterotrophic, gliding, Gram-negative, aerobic, pigmented, agarolytic bacteria was established. 16S rRNA gene sequence analysis indicated affiliation of the isolates to the genus Zobellia in the family Flavobacteriaceae. DNA-DNA hybridization experiments revealed that the strains studied represent three distinct and novel species, for which ...

Streptomyces coelicolor was found to produce a third secondary metabolite, in addition to the antibiotics methylenomycin A and actinorhodin previously described. This is a red pigmented, highly non-polar compound with antibiotic activity against certain Gram-positive bacteria. Mutants lacking the red compound fell into five cosynthetic classes. Representatives of each of the five classes were m...