Hi WYE. Thanks for your comment! I am analysing histone modifciation ChIP-seq data, and for that I used commercially available antibodies, cited elsewhere, and they have been successfully used in a wide range of organisms, from Drosophila to human stem cells. Histones are extremely conserved, and thus antibodies against them usually work pretty well in distantly related models.

'“higher” (although I prefer not to refer to them that way) animals' I completely agree with you, but it's not a matter of preference, but of correctly naming groups of animals. 'Higher' or 'lower', "basal", "primitive animal" are simply not correct terms, no matter how often people that have the insolence of calling themselves evolutionary biologists use them. Anyway, that is a discussion that would probably need another post :) I enjoyed reading yous.