erbium
PubChem Notes:
Erbium Erbium. An element of the rare earth family of metals. It has the atomic symbol Er, atomic number 68, and atomic weight 167.26.
Er - definition from Biology-Online.org
[oestrogen receptor status of tumourous tissue, which may be positive or negative. The implications of hormonal receptor status of the tissue are twofold (1) if er positive, i.e. sensitive to the hormone, it may respond better to hormone treatments than er negative tissue. (2) the er positive tissue generally is slower-growing.
MediLexicon ER - Medical Dictionary Definition for Term 'ER'
[1. Abbreviation for endoplasmic reticulum, estrogen receptor; emergency room.
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