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Collagenous proteins multiply

1990; Nature Portfolio; Volume: 344; Issue: 6266 Linguagem: Inglês

10.1038/344497b0

1476-4687

Dennis H. Bamford, Jaana K. H. Bamford,

Bacteriophages and microbial interactions

alpha-emitting and other radionuclides following environmental exposure is poorly known, with the exception of hot particles in lung tissue arising from the decay products of radon-222.Analysis of gross tissues or organs is unlikely to be useful if a particular radionuclide is associated with a small area or volume of cells.Possible biochemical pathways of interest are the trapping of rare earths, such as cerium by phosphate ions which are released by phosphatases and an association with the intracellular protein ferritin.So far there is no indication that localization of heavy radionuclides in human testes occurs; concentrations of other conservative radionuclides present in the systemic circulation are unlikely to be of concern in relation to uniform distributed dose received by the testis.However, an inert element, such as thorium, can be detected in human blood and urine and is enriched in bone for occupational and non-occupational exposure'.