Cell group
* are akin to the cells in our bodies
  - gatherings of at least three people who meet regularly for a variety of purposes
* are small groups of people who meet in members homes for a weekly bible study
  - study groups made up either of all men or all women

### cell:

Adrenocortical cell
* change with age in both subcellular morphology and level of steroidogenesis.
* lack estradiol reactivity.

Amacrine cell
* perform lateral inhibition similar to that of the horizontal cells.
* receive input from bipolar cells and modulate ganglion cell activity.

Ameloblast
* are cells which participate in the formation of enamel
  - derived from oral epithelium tissue of ectodermal origin
  - embryonic cells
* arise from epithelium, the oral epithelium.
* mainly make enamel, whereas odontoblasts make dentin.

Amoeboid cell
* capture food particles from the water.
* circulate in the mesoglea.
* produce the skeletal elements known as spicules.
* secrete the skeletal elements of the sponge.

Angiogenic cell
* coalesce to form two lateral and two median endothelial tubes.
* form in a horse shoe distribution lateral and rostral to the brain plate.

### cell:

Animal cell
* All animal cells are exactly the same shape.
* Most animal cells have common features.
* Some animal cells go into meiosis.
* are a type of eukaryotic cell
* are eukaryotic cells, or cells with a membrane-bound nucleus
  - generally smaller than plant cells
  - more oval-shaped, elongated
  - organized into tissues, and are mostly dipoid
  - similar to that of a plant cells with the presence of similar organelles
  - soft and flexible and can change shape reversibly
* bear the most similarity to marine protist cells, even though no fossil record.
* belong to the family of eukaryotic cell with the presence of membrane bound nucleus.
* can communicate by direct contact between membrane-bound cell surface molecules.
* come in a wide variety of shapes.
* divide by creating cleavage furrow
  - in two by pinching of the cytoplasm
* have a centrosome that contains a pair of centrioles
  - pair of centrioles composed of microtubules
  - smaller central vacuole than plant cells and completely lack cell walls
* have cell membranes rather than a cell wall and have no chloroplasts
  - walls to maintain their shape
  - centrioles that are used during cell division
  - more than one vacuole
  - no surrounding wall and are usually organized into multicellular tissues
  - softer membranes than plants cells
* induce their vegetal neighbors to form mesoderm.
* lack a cell wall, while plant cells have a cell wall
  - cellulose walls and chlorophyll
* lack the cell walls that provide support in the bodies of plants and fungi
  - cellulose cells walls of plant cells
  - rigid cell walls that characterize plant cells
* produce an extracellular matrix.
* require oxygen to survive.
* secrete a lot of protein, while plant cells secrete mainly hydrocarbons.
* turn carbohydrates, water and oxygen into energy.

Apical cell
* are fundamental to gametophyte growth.
* is dome like, Intercalated disc is present in filamentous.

Apoptotic cell
* are also rapidly disposed of, engulfed and broken down by neighboring cells.
* become small and compact, and their nuclei also become condensed and inactivated.
* initiate endothelial cell sprouting via electrostatic signaling.
* lose substrate attachment and become rounded.
* show characteristic smear on DNA staining.

Atypical cell
* have nothing to do with fibroids.
* tend to invade the most superficial portion of the dermis.