bacteria-cell-wall-antibiotic-resistance-777x583.jpg
mentally ill patients in the garden of an asylum
细胞壁(cell wall)是植物细胞外围的一层壁,具一定弹性和硬度,界定
无耻之徒精神病患者找工作好难
ファイル:gram_negative_cell_wall.svg | 百科全书
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