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special pathogens branch scientist is performing an elisa test on suspected hantavirus samples

标签: special,pathogens,branch,scien 浏览: 18

peruvian street vendor is selling a corn based drink he made at home

标签: peruvian,street,vendor,is,sell 浏览: 16

nomadic tuareg girl is receiving a smallpox vaccination in mali west africa

标签: nomadic,tuareg,girl,is,receivi 浏览: 15

nigerien child is receiving a smallpox vaccination

标签: nigerien,child,is,receiving,a, 浏览: 13

nigerian child is receiving a smallpox vaccination

标签: nigerian,child,is,receiving,a, 浏览: 14

officer is shown working in a plastic isolator unit

标签: officer,is,shown,working,in,a, 浏览: 18

railway bridge leading from rhodesia to zambia is overlooking the zambezi river at victoria falls

标签: railway,bridge,leading,from,rh 浏览: 22

nurse is shown standing near sewage pipes outside of an infectious disease hospital in johannesburg

标签: nurse,is,shown,standing,near,s 浏览: 16

lateral irrigation system water is conveyed off the main channel to laterally directed channels

标签: lateral,irrigation,system,wate 浏览: 16

this anopheles gambiae mosquito is obtaining a blood meal as it feeds on a human host

标签: this,anopheles,gambiae,mosquit 浏览: 19

anopheles gambiae mosquito is a known malaria vector of the parasite known to cause this disease

标签: anopheles,gambiae,mosquito,is, 浏览: 15

this smallpox vaccinee is shown covering the bandaged vaccination site with additional clothing

标签: this,smallpox,vaccinee,is,show 浏览: 15

smallpox vaccinee is shown placing a dirty waterproof bandage into a sealable plastic bag

标签: smallpox,vaccinee,is,shown,pla 浏览: 17

in this slide preparation the thick film is too thick and the thin film is too thin

标签: in,this,slide,preparation,the, 浏览: 21

mosquito known as aedes japonicus also called ochlerotatus japonicus is a specimen of the notre dame colony

标签: mosquito,known,as,aedes,japoni 浏览: 16