erythrocyte morphology trait erythrocyte molecular composition trait EFO:0801585 caripark EFO:0801584 EFO:0009703 Trait.ontology Any measurable or observable characteristic related to the proportions of proteins, minerals, nutrients, gases, or other substances in the erythrocyte, the fetal or adult cell in the blood that carries oxygen. 2021-08-06T14:52:21Z VT:0010939