Objective: To investigate the anti ulcer effect of aqueous extract of Azolla filiculoides (AF) in experimentally induced gastric ulceration in male Wistar rats. Methods: Twenty four rats were divided into four groups of six rats in each group. The group I and III rats were fed with standard diet, whereas, group II and IV rats were pre-treated orally with aqueous extract of Azolla filiculoides (...

A new PVC membrane mercury(II) ion electrode based on N,N-dimethylformamide-salicylacylhydrazone (DMFAS) as an ionophore is described, which shows excellent potentiometric response characteristics and displays a linear log[Hg(2+)] versus EMF response over a wide concentration range between 6.2 x 10(-7) and 8.0 x 10(-2) M with a Nerstian slope of 29.6 mV per decade and a detection limit of 5.0 x...

Nitrogen Fixation, Symbiotic Cyanobacteria, Photosynthesis, Respiration, Heterotrophic Growth Fructose supported the heterotrophic growth of the cyanobiont Anabaena azollae, isolated from the water fern Azolla filiculoides, and also enhanced its growth in the light by 2-3fo ld . Fructose was taken up at a high rate in the light and in the dark, in an energy-dependent reaction. The photosyntheti...