Table 1.

Characteristics of primary antibodies.

Antibody	Clone	Dilution	Expression/Staining
anti-ERG	rabbit monoclonal antibody, Abcam, clone EPR3864(2), ab133264, Cambridge, UK	1:250	nuclear
anti-SPINK1	mouse monoclonal antibody, Abnova, clone 4D4, H00006690-M01, Taipei, Taiwan	1:100	cytoplasmic
anti-HOXB13	rabbit monoclonal antibody, Abcam, clone EPR17371, ab201682, Cambridge, UK	1:3000	nuclear
anti-TFF3	rabbit monoclonal antibody, Abcam, clone EPR3974, ab108599, Cambridge, UK	1:2000	cytoplasmic