The product of the Indy gene resembles transport proteins in mammals that enable intestinal and kidney cells to take in metabolites to produce energy. (p. 391)

A genetically crippled strain of yeast can vaccinate mice against deadly normal strains. (p. 375)

Human skin and scalp tissue may provide a source of neural stem cells. (p. 360)

Rodents exposed to massive amounts of the pesticide rotenone develop a condition similar to Parkinson's disease. (p. 360)

An antibiotic that binds copper and zinc may prevent brain deposits that cause Alzheimer's disease. (p. 360)

A lack of Vitamin A may cause learning and memory problems, albeit potentially reversible ones. (p. 360)

Researchers monitoring monkeys have seen signs that slashing normal calorie consumption can benefit long-lived primates by extending natural life spans and reducing the odds of suffering diseases such as cancer. (p. 341)

Scientists may have found an explanation for why coffee drinking prevents Parkinson's disease. (p. 344)

By generating antibodies that neutralize nicotine, a vaccine could keep ex-smokers from getting the nicotine high that drives many of them back to their bad habit. (p. 344)