Localization and sequence of FcγRII-specific primers and probes. The structure of an FcγRII cDNA is shown in (A), with the exons depicted as boxes, and with their names above: S1, first signal exon; S2, second signal exon; EC1, first extracellular exon; EC2, second extracellular exon; TM, transmembrane exon; C2, second intracytoplasmic exon; C3, third intracytoplasmic exon. Primer and probe locations are indicated below the cDNA map. (B) Indicates the primer pairs and probe names, specificities, and sequences.