Choose all the mammalian cell lines below used as expression platform the biopharmaceutical industry CHO cells Vero cells E-coli cells Hi-5 cell line (baculovirus) S.cerevisiae cells HEK 293 cells PER.C6 cells

The mammalian cell lines used as expression platforms in the biopharmaceutical industry from the list provided are:<br /><br />* **CHO cells (Chinese Hamster Ovary)**<br />* **Vero cells (African green monkey kidney epithelial cells)**<br />* **HEK 293 cells (Human Embryonic Kidney 293 cells)**<br />* **PER.C6® cells (Human retinal pigment epithelial cells)**<br /><br />*E. coli* and *S. cerevisiae* are bacterial and yeast cell lines respectively, not mammalian. Hi-5 is an insect cell line used with baculovirus expression systems, also not mammalian.<br />