There are multiple definitions:

1. manganese(English)

   • Pollution and health, Water
   • https://doi.org…bul.2023.115317

2. mannan antigen(English)

   • used in the diagnosis of invasive candidiasis
   • IC, A-Mn
   • Infection, Diagnostics, Leukemia, Critical Care
   • https://doi.org/10.1186/cc9365