progressively

Freeze-storage egg banking for egg donation treatment

The rapid freezing technique of vitrification is set to revolutionise egg donation as a fertility treatment by enabling freeze-storage egg-banking. The…

Britain's urban rivers cleanest in 20 years

Scientists from Cardiff University have found that Britain's urban rivers are the cleanest they've been in over two decades.

Immune cells fighting chronic infections become progressively 'exhausted,' ineffective

A new study of immune cells battling a chronic viral infection shows that the cells, called T cells, become exhausted by the fight in specific ways, undergoing…