Alroy J, Weinstein R S
J Natl Cancer Inst. 1976 Mar;56(3):667-70. doi: 10.1093/jnci/56.3.667.
Unusual cell junctional complexes were described in spontaneously arising adenoacanthomas of canine mammary glands. These junctional complexes were a manifestation of bidirectional differentiation of tumor cell membranes.