There are multiple definitions:
electrogram(English)
- sensed electrical activity of the heart by an electrode implanted in the heart
- FDI, TDI, CFAE
- Electrophysiology, Cardiology
- https://doi.org…RCEP.111.964197
extraglomerular mesangial cell(English)
- part of the juxtaglomerular apparatus
- MD
- Kidney and adrenals
- https://doi.org…01238-3.00200-2