Expression of trophinin, tastin, and bystin transcripts in intact fallopian tube and in that with tubal pregnancy. In situ hybridization of an intact fallopian tube (A–F), and a fallopian tube with tubal pregnancy (G–L) for trophinin (A and G, antisense; D and J, sense), tastin (B and H, antisense; E and K, sense), and bystin (C and I, antisense; F and L, sense) using digoxigenin-labeled RNA probes. All photographs presented are in the same magnification, and the bar in (L) indicates 200 μm. (te, tubal epithelia).