parathyroid gland morphology trait parathyroid gland molecular composition trait 2025-05-01T20:33:10Z Any measurable or observable characteristic related to the proportions of proteins, minerals, nutrients, gases, or other substances in one of the two small, paired endocrine glands, usually found embedded in the connective tissue capsule on the posterior surface of the thyroid gland. Trait.ontology VT:0011169