microscopic view of anthrax. anthrax is an acute disease caused by the bacterium bacillus anthracis. - 胚乳 幅插畫檔、美工圖案、卡通及圖標
seed, castor bean (ricinus communis), wheat (triticum vulgare), cocklebur (xanthium strumarium), spiderwort (tradescantia virginiana), onion (allium cepa) germination study - 胚乳 幅插畫檔、美工圖案、卡通及圖標
microscopic view of anthrax. anthrax is an acute disease caused by the bacterium bacillus anthracis. - 胚乳 幅插畫檔、美工圖案、卡通及圖標
microscopic view of anthrax. anthrax is an acute disease caused by the bacterium bacillus anthracis. - 胚乳 幅插畫檔、美工圖案、卡通及圖標
sweetshrub (calycanthus) and wintercress (barbarea vulgaris) embryo cross sections; convolute and accumbent cotyledon - 19th century - 胚乳 幅插畫檔、美工圖案、卡通及圖標
violet flower (viola) seed diagram and st. john’s wort (hypericum perforatum) cross section - 19th century - 胚乳 幅插畫檔、美工圖案、卡通及圖標