follicle (n.), follicular (adj.)

https://doi.org/10.1351/goldbook.10729
  1. Small, secretory sac, such as the dental follicles that enclose the teeth before eruption or the hair follicles within the epidermis.
  2. Fluid- or colloid-filled ball of cells in some glands such as the thyroid gland and the ovaries.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 756 [Terms] [Paper]