Phylogram of deduced amino acid sequences of p44 genes from three deer specimens compared to consensus sequences of p44 paralogs from strains from the United States and the United Kingdom and sequences of Msp2 A. phagocytophilum (Msp2-Aph; GenBank no. AY541007 for strain NY-31) and sequences of St. Maries strains of Anaplasma marginale. GenBank accession numbers for sequences determined in this work are SS14-1 (DQ020144), SS14-2 (DQ020145), SS14-3 (DQ020146), SS14-4 (DQ020147), SS14-5 (DQ020148), SS14-6 (DQ020149), SS14-7 (DQ020150), SS14-8 (DQ020151), SS14-9 (DQ020152), SS33-1 (DQ020153), SS33-2 (DQ020154), SS33-3 (DQ020155), SS33-4 (DQ020156), SS40-1 (DQ020157), SS40-2 (DQ020158), and SS40-3 (DQ020159). The GenBank accession number for the whole genome sequence of Anaplasma marginale strain St. Maries is CP000030. The accession numbers for strain St. Maries are Msp1a (AM530), Msp1b (AM133), Msp2 (AM1144), Msp3 (AM1063), Msp4 (AM090), and Msp5 (AM236).