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of anemic chick serum to cultures of chicken marrow in plasma clots induces the development of erythrocytic colonies. Mammal erythropoietin shows no effect on cultures of chicken marrow. These observations confirm the existence of an erythropoiesis stimulating factor specific for birds, with properties similar to those of mammalian erythropoietin.
A multiple-screening clinic for men over forty-five years of age was held in Glasgow in July, 1965. 4372 volunteers presented themselves for examination of height and weight, blood-pressure, haemoglobin level, vision, urine for glucose, and radiography of the chest.
The energy compression system at the Glasgow 170 MeV electron linac is described. A system of three magnets plus a radio-frequency cavity is used to compress the linac energy spectrum by a factor of 5 to 15, depending on energy. Examples of compressed spectra are shown, and the effect of a phase Nike Free Run Canada Online
shift in the compression cavity is demonstrated.
A prototype polar flying spot scanner is being developed which will provide an intermediate speed measuring device for bubble chamber photographs. The paper describes the principles of operation with reference to both theoretical and electronic considerations. The performance with respect to selected examples of bubble chamber film has been investigated.