black and white vector illustration of children's activity coloring book pages with pictures of internal organ kidney. - 生理學 幅插畫檔、美工圖案、卡通及圖標圖畫 - 藝術品, 矢量圖
3d rendered illustration, visualisation of sperm cells racing to a egg to fertilise - 生理學 幅插畫檔、美工圖案、卡通及圖標精子, 人類繁殖, 懷孕
types of cholesterol in the blood concept. high-density lipoprotein (hdl) and low-density lipoprotein (ldl). - 生理學 幅插畫檔、美工圖案、卡通及圖標膽固醇, 低密度脂蛋白, 高密度脂蛋白
x-ray effect of male and female muscle and skeletal systems on black background. - 生理學 幅插畫檔、美工圖案、卡通及圖標人體, 黑色的背景
3d rendered illustration, visualisation of the synaptic gap between neural cells with neurotransmitters exchanging - 生理學 幅插畫檔、美工圖案、卡通及圖標細胞
3d rendered illustration, visualisation of neurons firing neurotransmitters in the synaptic gap - 生理學 幅插畫檔、美工圖案、卡通及圖標神經細胞
