搜元素提供国外优质的免版权矢量素材资源免费下载，该资源的中文名称是：Natural killer cell isolated on white background. Hand drawn scientific microbiology vector illustration in sketch style. Adaptive immune system，英文名称是：Natural killer cell isolated on white background. Hand drawn scientific microbiology vector illustration in sketch style. Adaptive immune system，该资源由网友上传，提供高速下载。
