“…In the case of bosons, a small violation of the SP would in general manifest itself as a small change in the properties of a multiparticle system, and therefore experimental tests are somewhat more difficult. In [7,8], the possibility of searching for lines forbidden by the SP in the spectra of molecules containing identical spin-0 nuclei was proposed. In [9,10], experiments were performed, by looking for electronic transitions in the O 2 spectrum between states which are antisymmetric in the exchange of the 16 O nuclei, which have nuclear spin I 0.…”