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giardia one of the most common intestinal parasites worldwide infects up to 20 percent of the worlds population

标签: giardia,one,of,the,most,common

chlamydia psittaci bacteria close up

标签: chlamydia,psittaci,bacteria,cl

electron micrograph of a vaccinia virus close up

标签: electron,micrograph,of,a,vacci

francisella tularensis bacteria close up

标签: francisella,tularensis,bacteri

appearance of bacterial colonies francisella tularensis bacteria close up

标签: appearance,of,bacterial,coloni

magnification of 403x this 2005 scanning electron micrograph sem provided a close up view

标签: magnification,of,403x,this,200

the globular material seeming to coat the setae represents particulate matter picked up by the mosquito from its environment

标签: the,globular,material,seeming,

close up of an asexual aspergillus sp fungal fruiting body

标签: close,up,of,an,asexual,aspergi

unidentified species of diatoms are seen to be caught up in an amorphous gelatinous biofilm

标签: unidentified,species,of,diatom

parasitic flea under micrograph close up

标签: parasitic,flea,under,micrograp

molecule made up of bound units of acetylglucosamine joined in such a way as to allow for increased points

标签: molecule,made,up,of,bound,unit

close up of the numerous sensorial hairs or setae

标签: close,up,of,the,numerous,senso

chitin is a molecule made up of bound units of acetylglucosamine

标签: chitin,is,a,molecule,made,up,o

spiders possess an exoskeleton composed of chitin molecule made up of bound units of acetylglucosamine

标签: spiders,possess,an,exoskeleton

close up view of one of two insects hooks

标签: close,up,view,of,one,of,two,in