microscopic view of the eastern equine encephalitis disease floating on black background. - 糖蛋白 幅插畫檔、美工圖案、卡通及圖標
cluster of hiv virus. hiv is the human immunodeficiency virus that can lead to acquired immune deficiency syndrom, or aids. - 糖蛋白 幅插畫檔、美工圖案、卡通及圖標