Nettles
(electron microscope image)
(Date taken unknown)
^BYellow fever mosquito.^b Coloured Scanning Electron Micrograph (SEM) of the head of a female yellow fever mosquito ^IAedes aegypti^i. The head is at centre left, with compound eyes (red). There are two hairy antennae, and a long proboscis (centre right) used for penetrating human skin and sucking blood. Only the female ^IAedes aegypti^i mosquito is a carrier of the arbovirus which causes yellow fever in humans. Affected patients develop a fever, and the skin becomes yellow due to jaundice. Yellow fever was once a fatal infection throughout the tropics, but now occurs only in parts of tropical Africa and South America. Magnification: x30 at 6x6cm size. x45 at 4x4"