Scientific Vampiric Interestingness

Probably too long to read the whole thing, but this article is about stem cells in mice. Stem cells are the cells which can turn into anything, which is handy in an injury or just when other cells die. However, stem cells age on their own too. These particular mice were injected with the blood of younger mice, and the stem cells in their blood got "younger." Not entirely vampiric, but it is a case of one being receiving the blood of another and getting younger as a result. Maybe vampires really have it right.