dinoflagellate antapical horn

A horn-shaped dinoflagellate antapex found in thecate species.

dinoflagellate apical horn

A horn-shaped dinoflagellate apex found in thecate species.

right horn of sinus venosus development

The progression of the right horn of the sinus venosus from its formation to the mature structure.

left horn of sinus venosus development

The progression of the left horn of the sinus venosus from its initial formation to the mature structure.

F bouton

Synaptic bouton found in the ventral horn of the spinal cord. F boutons range in diameter from 0.5 to 7 um and contain flattened or pleomorphic synaptic vesicles.

S bouton

Synaptic bouton found in the ventral horn of the spinal cord. S boutons range in diameter from 0.5 to 8 um and contain spherical synaptic vesicles.

polymeric immunoglobulin binding

Binding to a J-chain-containing polymeric immunoglobulin of the IgA or IgM isotypes.

V(D)J recombination

The process in which immune receptor V, D, and J, or V and J gene segments, depending on the specific receptor, are recombined within a single locus utilizing the conserved heptamer and nonomer recombination signal sequences (RSS).

T cell receptor V(D)J recombination

The process in which T cell receptor V, D, and J, or V and J gene segments, depending on the specific locus, are recombined within a single locus utilizing the conserved heptamer and nonomer recombination signal sequences (RSS).

nail development

The process whose specific outcome is the progression of a nail over time, from its formation to the mature structure. A nail is a horn-like envelope covering the outer end of a finger or toe, and consists of the nail plate, the nail matrix and the nail bed below it, and the grooves surrounding it.