Abstract The multipole expansion can be formulated in spherical and Cartesian coordinates. By constructing an explicit map linking both formulations in isotropic media. we discover a lack of equivalence between them in anisotropic media. In isotropic media. https://xmjbkbtllcbhtn.nizarblog.com/35080150/rna-guided-rna-silencing-by-an-asgard-archaeal-argonaute