71.   Greenwood offered an amendment to the bill to allow limited cloning of human cells for scientific research.

72.   Guarente is now looking for circles in the nucleoli of mouse and human cells.

73.   He said that he has replicated his findings on human cells.

74.   How surprising and embarrassing then that we might be slamming the door on cloning human embryonic cells.

75.   Human cells are seeded on a three-dimensional, biocompatible and biodegradable scaffolding built from ordinary surgical suture material.

76.   Human cells package their genetic instructions in rod-shaped storage devices called chromosomes.

77.   Human embryonic cells are expected to behave in the same general way as mouse cells, although few studies of them have been done.

78.   Human cells produce a nearly identical hormone.

79.   Human embryonic cells can in principle provide an inexhaustible source of islets, and of many other critical tissues that are damaged in disease.

80.   His recent work at Harvard has focused on advancing understanding of how viruses infect human cells and how those cells respond.