Garvan Institute of Medical Research May 21 2026 Scientists at the Garvan Institute of Medical Research have captured, for the first time, 'housekeeping' immune cells actively attacking and engulfing live melanoma cells – a discovery that could change the way we approach treatment for one of Australia's most common and deadly cancers. The findings, published today in the Journal of Experimental Medicine , reveal a previously overlooked population of immune cells called macrophages that patrol