I N THE COURSE OF OUR INVESTIGATION on the hemoglobins of various strains of laboratory rats with the use of starch-gel electrophoresis in a discontinuous buffer system, we have recently demonstrated the presence of three distinct patterns of hemoglobin, arbitrarily denoted as patterns I, II and III, in a local random-bred stock of Albino rats; out of 124 investigated male and female adult anim...

Background: Piperine is an alkaloid present in black pepper. It causes increase diameter of Graafian follicles when given to adult female albino rats thus leading decreased fertility. Aim: To assess the harmful effects piperine on ovaries follicles. Study design: Experimental Study. Place and duration study: Anatomy Department, Shaikh Zayed PGMI, Lahore from 1st August 2013 31st January 2014. M...

STUDY OBJECTIVES Previous studies have demonstrated that albino but not pigmented rats show acute increases in REM sleep following light-to-dark transitions. Light and dark have also been shown to have direct effects on NREM sleep and wakefulness in albino rats. Little is known, however, about the direct light-dark effects on sleep patterns in pigmented animals. The purpose of the present study...