11.   Algae that make metal-grabbing protein show promise for cleaning up toxic sediments, researchers said Monday.

12.   An immune-system booster derived from cow bile shows promise in early testing against pancreatic cancer, the deadliest of all malignancies.

13.   An experimental new gene-therapy technique has proved it can safely deliver a healthy gene and shows promise as a treatment for hemophilia, researchers report.

14.   Animal studies show promise, but clinical trials are needed.

15.   Drug-coated stents now being tested show promise of making them even more effective, he said.

16.   Hair loss from chemotherapy, a distressing side effect of cancer treatment, could be a thing of the past if a gel under development shows promise in adults.

17.   The study found that nonlethal means of scaring off wildlife show promise, but many animals learn to thwart the best-laid plans.