[A study of ratios between histone fractions].

The amount of individual fractions in the whole histone isolated from the blood of hen, frog (Rana ridibunda), bream (Abramis brama), from rat thymus and from the locust (Schistocerca gregaris) was studied quantitatively. It is shown that the ratios between fractions F2a1, F2b, F2a2 and F3 are fixed. The share of each fraction in the sum of fractions F2a1, F2b, F2a2, F3 was found to be approximately 22.5, 30.5, 21.0 and 26.0 per cent, respectively. The share of the fraction F1 can variate within a rather wide range.