red pulp

synonym: splenic pulp
https://doi.org/10.1351/goldbook.13640
Parenchymal tissue of the spleen consisting of cords of cells and sinuses infiltrated with erythrocytes and responsible for removal of aged or damaged erythrocytes.
See also: white pulp
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1239 [Terms] [Paper]