EarthSecrets of butterfly wing patterns revealed by gene hacking Butterflies' wings have extraordinary patterns and colours, and it turns out they are controlled by a single "master gene" that performs many roles ¿ìè¶ÌÊÓÆµ
HealthStem cell technique could reverse a major type of infertility Men with extra sex chromosomes can have difficulty producing fertile sperm. Now researchers have got around this in mice by making stem cells from their skin ¿ìè¶ÌÊÓÆµ