Posterior cranial fossa tumors. Headaches, oculostatic disorders and scintillation camera findings.
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Biomedical subjects
Publications and source records attributed to T Johansson.
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Plasmid and probably also chromosomal characters have been genetically transformed in Staphylococcus aureus. Recipient cells show competence throughout the exponential growth phase with a maximum at early times.
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Poultry production is under strict official control in Finland. Fifteen years after the introduction of 'competitive exclusion' treatment the majority of growers (over 70%) use it routinely. The number of Salmonella-positive flocks is less than 5% and the incidence of Salmonella-contaminated broiler carcasses has been 5-11% in the last two years. The average number of Salmonella cells on contaminated carcasses is very low, generally less than 5 per carcass. Between 70 and 80% of human Salmonella infections are contracted abroad, mainly outside the Nordic countries. It is estimated that only 15-20% of some 1200 cases of domestic origin are caused by contaminated poultry.
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