antonie van leeuwenhoek — portrait of the dutch naturalist and microscopist with long curly hair and neckcloth in an ornamental frame - 微生物學家 幅插畫檔、美工圖案、卡通及圖標
the synaptic cleft is the space between two neurons. it connects the presynaptic neuron with the postsynaptic neuron and ensures that the transmission of excitation can take place between the two - 微生物學家 幅插畫檔、美工圖案、卡通及圖標
seated in his study louis pasteur poses for a portrait inside his workspace on rue dutot - 微生物學家 幅插畫檔、美工圖案、卡通及圖標
medical lab worker wearing protective suit doing scientific research using lab equipment thin line icon - editable stroke - 微生物學家 幅插畫檔、美工圖案、卡通及圖標輻射防護服, 圖示, 有害物質
robert koch — bust portrait of the german physician and microbiologist with full beard, round spectacles, suit and bow tie, looking to the right - 微生物學家 幅插畫檔、美工圖案、卡通及圖標
medical, pharmaceutical, medical research, medical technology and dna, isometric medical team members get together to talk and analyze - 微生物學家 幅插畫檔、美工圖案、卡通及圖標等軸測投影, 醫院, 醫學研究
plague segregations camp at hyderabad, examining the blood of a suspected case, third plague pandemic, british india, 1890s, 19th century - 微生物學家 幅插畫檔、美工圖案、卡通及圖標海德拉巴 - 印度, 印度