cells | Revolutionary Cells (German group) | Revolutionary Cells | Q-Cells | Plant cells with visible chloroplasts (from a moss, ''Plagiomnium affine | High Five cells | Dead Brain Cells | Ceramic Fuel Cells | A scanning electron microscope image of NETs engulfing fungal cells (''Candida albicans | A431 cells | 3T3 cells |
The parafollicular cells of the thyroid produce calcitonin in response to high calcium levels, but its significance is much smaller than that of PTH.