JuniorDr.com talks a bit about what Second Life is, and covers several places where it is being used to provide bioscience and medical training, including Genome Island, Health Info Island, The Ann Myers Medical Centre and the Heart Murmur Sim (Disclosure: Some of the materials covered I have provided to the people running the exhibits). Meanwhile the Student British Medical Journal covers training from Coventry University in some depth and mentions a range of other universities and their activities in the medical field.