Eosinophile
https://en.m.wikipedia.org/wiki/Eosinophil
https://en.m.wikipedia.org/wiki/Eosinophil_cationic_protein
https://en.m.wikipedia.org/wiki/Eosinophil_peroxidase
https://en.m.wikipedia.org/wiki/Peroxidase
Eosinophils (eosinophiles, acidophils) are a variety of white blood cells (WBCs) and one of the immune system components responsible for combating multicellular parasites and certain infections in vertebrates.
Eosinophil granulocytes appear in large numbers in inflammation sites and in response to certain parasitic infections. These cytoplasmic granules contain positively charged proteins that characterize the cells.
RE: Carboxysome: Bacterial Microcompartment