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Medical zoologist Stephen Rich cant wait to get his hands on your ticks. As head of the Laboratory of Medical Zoology (LMZ) at the University of Massachusetts Amherst, Rich and colleagues collect thousands of ticks, dead or alive, extracted from people and pets and sent in from across the country, to help map the distribution of different kinds of the blood-sucking arachnids, and to categorize the many disease-causing pathogens they carry.

Researchers at Los Alamos National Laboratory are investigating the complex relationships between the spread of the HIV virus in a population and the actual, rapid evolution of the virus (phylogenetics) within each patients body.