Parasitic apicomplexans
(a) Apicomplexans are parasitic protists. They have a characteristic apical complex that enables them to infect host cells. (b) Plasmodium, the causative agent of malaria, has a complex life cycle typical of apicomplexans.
Source
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"OpenStax College, Groups of Protists. October 16, 2013."
http://cnx.org/content/m44617/latest/Figure_23_03_05ab.jpg
OpenStax CNX
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