/library/oar/handle/123456789/42159 2025-11-09T16:27:43Z 2025-11-09T16:27:43Z /library/oar/handle/123456789/44045 2019-10-10T07:50:19Z 1976-01-01T00:00:00Z

Title: Meningiomas Abstract: Harvey Cushing showed that these tumours are found at the sites of arachnoid granulations and on histological examination, there is so much resemblance between the structure of the tumour and that of normal granulation that the arachnoid cells are regarded as the origin of the majority oi this group of neoplasms. They tend to be related to major venous sinuses and commonly arise parasagitally or on the base of the skull. Another common site is the sphenoid ridge. Rarely a meningioma may arise from the tela choroidea and appear as an intraventricular tumour.

1976-01-01T00:00:00Z /library/oar/handle/123456789/44044 2019-06-13T19:36:26Z 1976-01-01T00:00:00Z

Title: A few facts about the EBV Abstract: The EBV as it is now known is none else than the Epstein-Barr Virus. The name was derived from those of the two groups of workers who independently observed the virus under the electron microscope for the first time.

1976-01-01T00:00:00Z /library/oar/handle/123456789/44043 2019-06-13T19:36:34Z 1976-01-01T00:00:00Z

Title: Cyclic amp : the ubiquitous hormone Abstract: It is now being claimed that many hormones act by way of a two-messenger system. The hormones may be regarded as first messengers which travel from their cells of origin to their target tissues to stimulate the formation therein of a second, intracellular messenger. Although one cannot exclude that other second messengers will eventually be discovered, the only one identified so far is cyclic adenosine 3', 5' monophosphate, or cyclic AMP. The function of this cyclic nucleotide as second messenger mediating the effects of a variety of hormones and other biologically active agents has now been definitely proved. Since the recognition of its physiological role, from the discovery that it mediated the hyperglycaemic effect of adrenaline and glucagon by stimulating the conversion of inactive to active glycogen phosphorylase, work in many lalboratories has established both the ubiquity of cAMP in living organisms and the large number of its regulatory mechanisms.

1976-01-01T00:00:00Z /library/oar/handle/123456789/44041 2019-06-13T19:36:52Z 1979-01-01T00:00:00Z

Title: Mental subnormality Abstract: The Year of the Child is a good opportunity to review some of the epidemiological aspects and problems facing the mentally retarded. These are people who mentally grow very slowly and thus remain to all intents and purposes children for most if not all their life.

1979-01-01T00:00:00Z