Blood plasma from snakes of the Brazilian poisonous Bothrops and the non-poisonous Eudryas is yellow-green in color and when observed through ultraviolet light (mercury lamp with Wood’s filter) presents an intense green-blue fluorescence. This observation has suggested to us a detailed study of the plasma pigments of some snakes. When the blood plasma proteins are precipitated with 50 per cent ...

Absorbance spectra of cone outer segments and oil droplets were recorded microspectrophotometrically in the retina of the red-eared turtle, Trachemys scripta elegans. There are four cone visual pigments, with lambda(max) = 617 nm (red sensitive), 515 nm (green sensitive), 458 nm (blue sensitive), and 372 nm (UV-sensitive). The red-sensitive pigment resides in single cones with red or orange oil...

Human color vision is based on three light-sensitive pigments. The isolation and sequencing of genomic and complementary DNA clones that encode the apoproteins of these three pigments are described. The deduced amino acid sequences show 41 +/- 1 percent identity with rhodopsin. The red and green pigments show 96 percent mutual identity but only 43 percent identity with the blue pigment. Green p...

A 70 year old lady of recurrent ischaemic stroke on a chronic urinary catheter presented with purple discoloration of her catheter bag. Clinically, she was febrile. The urinary catheter drainage bag (Panel A) was purple stained. Her urine pH was alkaline at 7.5 with leucocytes present. The urine culture grew Klebsiella pneumoniae. She was treated with ampicillin/sulbactam which led to the resol...

Rhodopsin, Insect Visual Pigment, Retinal, Thin Layer Chromatography, Xanthophyll Thin layer chromatography of retina extracts from Calliphora yielded, instead of retinal (or retinaloximes after N H 2OH treatment) a considerably more polar aldehyde or its corresponding oximes. That these compounds originate from the chromophoric group of the visual pigment was shown by the occurrence of differe...

Atomic layer deposition (ALD) is performed to obtain less than 1 nm thick yttria-doped ceria (YDC) layers as cathode functional increase the surface oxygen incorporation rate for low-temperature solid oxide fuel cells (LT-SOFCs). Introducing a YDC modification (SML) has revealed that optimized yttria concentration in can catalyze exchange kinetics at interface between electrolyte and cathode. T...

Although blue-white screening based on α-complementation has been widely used in the screening of genetically modified bacteria, only a single blue-white screening is typically not enough to eliminate false positives. Sometimes, a secondary blue-white screening for the target colonies is required. In this study, two methods were used to investigate the feasibility of secondary blue-white screen...

A simple medium was developed, using esculin as the substrate, for the isolation and identification of Cryptococcus neoformans. C. neoformans produced a brown-black pigment on the medium; all other yeasts produced no pigment or were light yellow. Esculin is beta-glucose-6,7-dihydroxycoumarin. C. neoformans produced pigment because the 6,7-dihydroxycoumarin component of the esculin molecule was ...

The chloroform-soluble pigments of various pseudomonads have been found to be phenazine derivatives (Clemo & Daglish, 1950; Hillemann, 1938; Kogl & Postowsky, 1930; Kluyver, 1956; Haynes et al. 1956), whereas the constitutions of water-soluble fluorescent pigments of various pseudomonads are not well known. This has been mainly due to the failure of previous attempts to obtain the pigments in a...

Eugenia jambolana is a traditional medicinal plant of low reaches of Kumaun Himalaya. The tribal inhabitants of Himalaya use the plant for curing diabetes and abdominal pain of peptic ulcers. The leaves of the plant were collected from Tarai regions of Himalaya. About 2 kg dried and powdered sample of the leaves was extracted with 50% aqueous methanol and extract obtained was concentrated under...