Photomicrograph of a hookworm egg from an undetermined species of origin, which can cause intestinal problems in humans, 1986.美國
Diagram of invertebrate digestive tracts: bee, planarian, nematode, snail, zooid, jellyfish, spider, drawing.
sequence of illustrations showing life cycle of tapeworm (cestoda) through digestive systems of animals and humans and reforming in food - 扁蟲 幅插畫檔、美工圖案、卡通及圖標插圖, 食物鏈
illustration of cross section showing how early stage embryo of flatworm (phylum platyhelminthes) differentiates into three layers of cell tissue, ectoderm, mesoderm and endoderm - 扁蟲 幅插畫檔、美工圖案、卡通及圖標水彩畫
This photograph taken on May 19, 2017 shows a researcher looking for flatworm eggs in urine samples under a microscope at Khon Kaen University in the...尿液
yellingbo nature conservation reserve, victoria, australia. a bright yellow slow worm or land planarian on a lichen-covered tree. - 扁蟲 個照片及圖片檔
