Fig. 4. Changes in Hct as a function of development in late-stage (day 15–17)
chicken embryos. Data from seven studies, including the present one, are
presented. 1 (Romanoff, 1967);
2 (Tazawa et al., 1971); 3
(Tazawa, 1971); 4
(Tazawa, 1972); 5
(Tazawa, 1980); 6 (Dziawolski
et al., 2002); 7 present study.