RESUMEN
Two simple and sensitive spectrophotometric methods have been developed for the estimation of fenofibrate in pure and pharmaceutical dosage forms. Method A and B are based on ion association complex formation of the drug with Methylene Blue and Saffranine respectively. Beers law is obeyed in the concentration range of 5-15 μg/ml (Method A) and 10-30μg/ml (Method B) with good correlation coefficients. These methods have been statistically evaluated and found to be precise and accurate.
RESUMEN
The expression and distribution of keratins within different layers of enamel organs of embryonic and neonatal rats studied by using indirect immunoperoxidase and immunofluorescent techniques in paraffin-embedded tissues employing specific antibodies revealed Keratin positivity in odontoblastic layer, oral epithelium and dental lamina in primitive stages; other odontogenic tissues showed negative reaction.