Secreted

When squeezed, Tom's spot secreted pus.

The key to sexual attraction may be pheromones—airborne chemicals secreted from the body that are known to alter behavior.

Researchers at Emory University in Atlanta say the secreted peptide — a subunit of a protein chain — kills dozens of flu strains that plague humans. It is effective against H1 viruses, including ones that could cause pandemics.