Mesoblastic Phase
Mesoblasticphase:
1. Site:
Yolk
sac (0 – 6 weeks)
2. Blood cells seen:
erythroblasts
3. Types of Hemoglobin seen:
Portland
Zeta(z) + gamma(g)
Gower
1
Zeta(z) + epsilon(e)
Alpha(a) + epsilon(e)
Gower
2
4. Hematopoietic stem cells near the aorta seed the liver at 5th week
of gestation