41.   That delays healing because new skin cells grow into the wound from the healthy tissue around its edges and, in a superficial wound, from below.

42.   The cells grew on the structure and took on the function of a kidney.

43.   The nerve growth factor allows cells to grow and maintain fibers that link neurons in the brain, even those in distant locations.

44.   The treated human cells grew normally with no evidence of HPV infection.

45.   The untreated cells grew into genital warts.

46.   This action is one factor that allows some cancer cells to grow without restraint.

47.   These cells could grow huge tissue banks for safer drug testing.

48.   When those cells grew they were capable of producing a full animal, not just one specific tissue.

49.   Weinberg built his cancer cell by first inserting a gene-turned-bad called ras that causes cells to grow incessantly.