has part has part has_part characteristic of has modifier endoplasmic reticulum lumen abnormal endoplasmic reticulum morphology dilated endoplasmic reticulum 2025-10-06T11:33:20Z dilated ER cisternae MP:0031687 dilated endoplasmic reticulum cisternae ER dilation MPheno.ontology the luminal space of the endoplasmic reticulum is increased in volume or area, usually with an increase in contained fluid dilated ER cisterna endoplasmic reticulum dilation dilated endoplasmic reticulum cisterna dilated ER abnormal dilated