title: Cryopreservation of sheep red blood cells. 3. Complement titrations with frozen sensitized cells.
mesh_terms: D000818:Animals; D001793:Blood Preservation / Q000379:methods*; D003165:Complement System Proteins / Q000032:analysis*; D003451:Cryoprotective Agents; D004912:Erythrocytes / Q000276:immunology; D005069:Evaluation Studies as Topic; D005615:Freezing; D005881:Gingiva; D007202:Indicators and Reagents; D011205:Povidone; D012756:Sheep / Q000097:blood*
chemical_list: D003451:Cryoprotective Agents; D007202:Indicators and Reagents; D003165:Complement System Proteins; D011205:Povidone