The murine embryonal carcinoma cell line P19S1801Al develops into neuronlike cells after treatment with retinoic acid (Edwards and McBurney, 1983). We have analyzed the expression of cell surface carbohydrate antigens and intracellular cytoskeletal antigens in differentiating OlAl cells in order to identify the cell types present in the cultures and to characterize the differentiation process. ...

Radioactive precursors are not incorporated into deoxyribonucleic acid in viva until 18 hours after partial hepatectomy (1,2). This lag period may represent the time required for the synthesis of some specific protein which enables DNA synthesis to occur (3). It is known that inhibitors of protein synthesis will inhibit the synthesis of bacteriophage DNA if they are added before DNA synthesis b...

changes result primarily from the excessive uptake of some nutritional element(s) by the tumor (14), and this concept appears to be substantiated in part by a number of nutritional and metabolic studies in tumor-bearing hosts (6, 15, 16, @3,@,4). On the other hand, there appears to be equally valid evidence to support the postulate that systemic changes in the host result from the elaboration o...

changes result primarily from the excessive uptake of some nutritional element(s) by the tumor (14), and this concept appears to be substantiated in part by a number of nutritional and metabolic studies in tumor-bearing hosts (6, 15, 16, @3,@,4). On the other hand, there appears to be equally valid evidence to support the postulate that systemic changes in the host result from the elaboration o...

Ladakh (elev. 3000-59G(}m), the northernmost part of India is one of the most elevated regions of the world with habitation up to 55(}(}m. The general aspect is of barren topography. The climate is extremely dry with scanty rainfall and very little snowfall (Kachroo et al. 1976). The region is traditionally rich in ethnic folklore and has a distinct culture as yet undisturbed by external influe...

Background: The assessment of laboratory skills in the subject of Physiology is examined by Objective Structured Practical Examination (OSPE) and Viva Voce (VV). The performance of students as well as their opinion about the assessment tools is dissimilar. The objective of this study was to compare OSPE and VV in terms of perception and scores acquired by students. Methods: A crosssectional stu...