Sensitive PCR analysis of vaccine samples refutes the controversial hypothesis that the AIDS epidemic began with a contaminated oral polio vaccine. A series of papers in this week's BMJ , and a recent report from the UK's House of Commons Science and Technology Committee raise serious concerns about the widespread use of predictive genetic testing. A combination of cytology and methylation markers in breast-duct fluid could be useful for detecting breast cancers that are missed by mammograms. Microarray analysis of different brain regions identifies molecular markers for amygdala subnuclei. Three independent studies quash the theory that experimental polio vaccines administered in Central Africa in the 1950s were the origin of the AIDS pandemic.
Genetic analysis reveals that male fish eat their own young.