[The content of DNA, RNA and protein and the wet weight:DNA, the protein:DNA and the RNA:DNA ratio in 19 different tissues of bovine fetuses of different body weight].
In 3 groups of fetuses (n = 6 each) of cattle with a body mass of 4.18 +/- 2.1 (about 160 days old), of 9.72 +/- 0.97 (about 200 days old) and of 17.12 +/- 2.61 kg (about 230 days old) the content of DNA, RNA and protein in 19 different tissues was analysed. The wet weight:DNA-, the protein:DNA- and the RNA:DNA-ratios were calculated. The growth of the different tissues in the mentioned period of the development of the fetuses by hyperplasia and hypertrophy is discussed.