cross section - xylem is a type of tissue in vascular plants that transports water and some nutrients. scientific research. plant tissue structureimmunofluorescent photomicrograph, organs samples, histological examination, histopathology on the microscope - 生理學 個照片及圖片檔細胞, 分析, 顯微鏡
view of a section of the brain in the middle line anatomy engraving 1881 - 生理學 幅插畫檔、美工圖案、卡通及圖標插圖, 舊的, 復古風格
immunofluorescent photomicrograph, organs samples, histological examination, histopathology on the microscope - 生理學 個照片及圖片檔細胞, 抽象, 體檢
Rockefeller University biologist Michael Young stands in his lab after winning the Nobel Prize in Physiology or Medicine on October 2, 2017 in New...
young man using exercise bike, medical science student monitoring his fitness levels - 生理學 個照片及圖片檔表演, 健身運動, 分析
young woman on exercise bike in university sports science department, mid adult woman performing experiment and assessing performance - 生理學 個照片及圖片檔健身運動
young woman on exercise bike in university sports science department, young man performing experiment and assessing performance - 生理學 個照片及圖片檔
rods (pink coloured here) and cones (blue) are found in the mammalian and avian retina away from the fovea or the central zone of greatest acuity - 生理學 個照片及圖片檔電子顯微照相, 細胞, 人體構造
