41.   The procedure, as done at Sloan-Kettering, involves injecting both the blue dye and the isotopes into breast tissue around the tumor.

42.   The researchers say exercise in young women may reduce risk by delaying the onset of monthly periods, during which ovarian hormones bombard breast tissue.

43.   The scaffold of the breast tissue consists of sodium alginate, a spongy, seaweed-derived substance mostly used as ice-cream thickener.

44.   The search is now on to identify estrogenlike molecules that have beneficial effects on blood vessels but do not affect breast tissue.

45.   Two early breast tumors, not detected by any testing, were also found in the breast tissue removed from women who had chosen prophylactic mastectomy.

46.   Unlike the liver, breast tissue varies greatly among women.

47.   What has people most excited about raloxifene is its apparent lack of effect on breast tissue.

48.   What M.D. Anderson and the Austin doctors hope to show in their trials is that the ablation works on breast tissue like it does on the liver.

49.   Women who have had an estrogen-sensitive breast cancer can instead take tamoxifen or raloxifene, which have estrogenic effects on bone but not on breast tissue.

50.   A lower accuracy, said Esserman, meant that more patients had unnecessary biopsies of breast tissue and that more cancers went undetected.