Mouse, crystalline forms

This isozyme is chemically and immunologically distinct from the more widely distributed forms of LDH (84,85) however, its subimits (designated C) can form enzymically active hybrids with H in vitro and with M in vivo and in vitro (88). It has been isolated from mouse testes in a crystalline form (85) that is suitable for X-ray diffraction studies. (87). 

The second RJRT investigation involved the MSS from filter-tipped cigarettes (3249, 3273) [see Table 2 in (3262)]. In that study forty-four PAHs, including the eleven PAHs found in the initial study were identified (3240, 3244). Of the forty-four PAHs, fourteen were isolated in crystalline form and characterized by both UV spectral and classical chemical means [see Table 1 in (3262)]. B[a]P, B[a]A, DB[a,ft]A, and several other PAHs were also isolated in crystalline form from the CSC (3240,3244,3273). The other thirty were identified from the agreement of their U V absorption spectra with those of authentic samples or with published spectra. B[a]P, B[fl]A, and DB[a,ft]A had been reported to be tumorigenic to mouse skin although the bioassay data for B[a]A were contradictory (983, 1543, 1544). 

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