occurs in in taxon Eimeria acervulina merozoite stage Gallus gallus erythrocyte Eimeria acervulina merozoite stage He Group A merozoite stage in the Eimeria acervulina. Jie Zheng Anthony Huffman https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7351014/ https://github.com/OPL-ontology/OPL/issues/24 Eimeria acervulina lifecycle stage