Monomorphic

If, in fact, in L. funebris there is no sex marker on the song elements themselves, then a young bird must be able to sex its tutor. The same is true if the individuals were predisposed to produce the total vocabulary of any population, or of both sexes in their own population, and then under experience had to suppress a sex-specific subset of that repertoire. It seems unrealistic to assume the reverse, that a parent bird can sex by some hidden cues newly hatched sexually monomorphic offspring and direct its own vocabulary to consexual young only.

Common immunohistochemical markers of this lymphoma include CD2, CD56, CD3, and T-cell receptors. 7 Typically, the histology of these lymphomas are characterized by monomorphic inflammatory cellular infiltrates, which may be diffuse or show angiocentricity and angiodestruction as well as tissue destruction. 7 Lymphoid markers from the nasal mucosal biopsy from this patient were negative for CD56 and EBER.