This is a scanning electron micrograph of Plasmodium gallinaceum, which causes malaria in poultry, invading the midgut of the Aedes aegypti mosquito.
Credit: NIAID
"Fighting Drug-Resistant Malaria"
Rick Fairhurst and Others at NIAID Go Global
By Kristofor Langlais, NICHD, for the NIH Catalyst
(http://www.niaid.nih.gov/topics/Malaria/research/Pages/fightingMalaria.aspx)