Researchers studied a protein called Ubp5 that helps the fungus Cryptococcus neoformans cause disease in humans. By removing this protein, the fungus became much less harmful and the immune system could fight it better. The fungus with the missing protein had problems with its outer coating, couldn’t hide as well from the immune system, and couldn’t spread to the brain. This suggests that blocking Ubp5 could be a new way to help the body defend against this dangerous fungal infection.