title: B-1/macrophages as 'living fossils'.
authors.forename: B
authors.initials: B
authors.lastname: Plytycz
authors.forename: R
authors.initials: R
authors.lastname: Seljelid
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D005075:Biological Evolution; D008264:Macrophages / Q000276:immunology*; D010587:Phagocytosis