Colour patterns are a prominent feature of many animals and are of high evolutionary relevance. In zebrafish, the adult pigment pattern comprises alternating stripes of two pigment cell types, melanophores and xanthophores. How the stripes are defined and a straight boundary is formed remains elusive. We find that mutants lacking one pigment cell type lack a striped pattern. Instead, cells of o...

A study of respiration and glycolysis in vitro of retinal pigment epithelium and retina minus the pigment epithelial layer has indicated metabolic similarities and differences between the two tissues. Aerobic lactic acid production from glucose was one-half in pigment epithelium what it was in retina, and the Pasteur effect operated with approximately the same efficiency in either tissue. Pigme...

The article presents the results of a study synthesis new type pigment - nickel phthalocyanine diphosphate (DAPNiPc), which contains macroheterocyclic compounds. influence method obtaining in liquid and solid phases on its physicochemical properties intensity has been studied. gross formula is given areas practical application are shown. Thermal analysis Setaram LabSys Evo instrument (France) w...

The chemical-mineralogical characterization of rupestrian paintings in red, white, black and yellow colors, which decorate the rocky walls from archaeological sites Ema Furna dos Índios (Inhuma, Piauí, Brazil) was performed. chemical analyses were performed situ by non-invasive analytical technique X-ray fluorescence spectrometry (XRF) as well laboratory using a non-destructive approach, withou...

Burkholderia cepacia complex (BCC) represent a group of opportunistic organisms that cause wide variety infections including the nosocomial. The organism is found to sepsis and also reported blood stream in malignancy. Here, we present case series five patients with which an unsual violet pigment producing BCC was isolated. Keywords: Violet pigment, Burkholderia, Sepsis, Malignancy