By Marianne Barriaux An enviromental activist from the Environmental Protection Volunteers Association in central China's Henan province collects a...
Photograph of epidemiologist Ed Baker standing outside a house, examining a water sample taken as part of a study into contamination of the public...
Photograph with a close up of a dipper with a water sample full of mosquito pupae held by an entomologist hand over hay, during investigations for...蚊子
Macro photograph of mosquito larvae with prominent breathing siphons, gathered at the surface of a water sample, 1976. Image courtesy CDC.幼蟲, 蚊子
