But the only choices hae been glass labware and a product called Matrigel, a gelatinous protein mixture secreted by mouse tumor cells.

• 但是，玻璃材质的试验器皿是唯一的选择，另外就是基质胶，是一种由大鼠肿瘤细胞产生的胶状蛋白混合分泌物。