1. In the 1857 that microsporidia where first described by the Nageli. 2. Microsporidia that infect mammals are 1.0-4.0 ?m.3. Microsporidia can infect a variety of hosts, including hosts which are themselves parasites.4. Horizontal gene transfer ( HGT ) seems to have occurred many times in microsporidia . 5. Microsporidia are restricted to animal hosts, and all major groups of animals host microsporidia.6. Microsporidia are restricted to animal hosts, and all major groups of animals host microsporidia . 7. In microsporidia this is mediated by a unique and highly specialised protein : the polar tube. 8. The "'Microsporidia "'constitute a group of spore-forming unicellular parasites. 9. The named species of microsporidia usually infect one host species or a group of closely related taxa. 10. Microsporidia produce highly resistant spores, capable of surviving outside their host for up to several years.
