Term: kidney immature B cell
Name: kidney
Synonyms: mesonephros
Definition: Cavitated compound organ located in the pleuroperitoneal cavity where hematopoiesis and filtering of blood occur.
Ontology: Anatomy Ontology [ZFA:0000529]

Name: immature B cell
Synonyms: immature B lymphocyte, immature B-cell, immature B-lymphocyte, newly formed B Cell
Definition: An immature B cell is a precursor B cell that has the phenotype surface IgM-positive and surface IgD-negative, and have not undergone class immunoglobulin class switching or peripheral encounter with antigen and activation.
Ontology: Anatomy Ontology [ZFA:0009343]