On the Internal Anatomy of the Larva of the Rat-Flea, Nosopsyllus fasciatus (Bosc) On the Internal Anatomy of the Larva of the Rat-Flea, Nosopsyllus fasciatus (Bosc) (pp. 465-538) ...

The rodents have long been blamed for spreading the plague, which is caused by the bacterium Yersinia pestis. Researchers thought the bacterium would infect fleas on rats, and when the rats died, the ...

Welsh city riddled with thousands of rats, cockroaches and fleas Story by Jonathon Hill • 10mo G areth Davies has barely greeted me before he tells me of his first catch of the day.