The white pulp is the primary immunology region of the spleen in both species however the WP makes up less than a quarter of splenic tissue the red pulp RP makes up the majority of the tissue and has immune function distinct from that of the WP
The white pulp (WP) is the primary immunologic region of the spleen in both species; however, the WP makes up less than a quarter of splenic tissue. The red pulp (RP) makes up the majority of the tissue and has an immune function distinct from that of the WP.
Birds migrating in the winter would be a behavioral adaptation. The rest of the adaptations would be structural or physiological because they are controlled by mutations in the DNA. <span />
