title: Proton T1 study of coverage parameter changes in tissues from tumor-bearing mice.
abstract: measurements of water proton spin-lattice relaxation time, T1, at 20 and -15 degrees C have been performed in spleen, kidney, liver, and muscle tissues from tumor-bearing mice, as well as in tumors grown in their dorsal subcutaneous tissues. All mice used were either from the C3H/HeJ or BALB/c strain. At - 15 degrees C the T1's of tissues of a given type from tumor-bearing and healthy mice are essentially the same. It is shown that in spleen the increased T1 from tumor-bearing mice can only be explained in terms of a large change in the water coverage parameter of macromolecules. In liver, muscle, and tumors the increased water content accounts for the changes in T1, while kidney represents an intermediate case.
mesh_terms: D000818:Animals; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D009374:Neoplasms, Experimental / Q000378:metabolism*; D011522:Protons; D013154:Spleen / Q000378:metabolism; D014867:Water / Q000378:metabolism*
chemical_list: D011522:Protons; D014867:Water