Research Article

The Postembryonic Development of the Immunological Barrier in the Chicken Spleens

Figure 2

The histological structure of different ages of the chicken spleen with HE staining. Each column represents the histological structure of the chicken spleens of the same age. CA: central artery; LN: lymph nodule; RP: red pulp; PELS: periellipsoidal lymphatic sheath; PALS: periarteriolar lymphatic sheath.