1. The midgut gland cell differentiation occurs at Z2. There are 4 types of cells, i. e. , embryonic cell (E-cell), fibrillar cell (F-cell), blister cell (B-cell) and resorptive cell(R-cell). 中肠腺小管上皮在Z2期细胞已有了分化，由4类细胞组成，即胚细胞（E细胞）、纤维细胞（F细胞）、泡状细胞（B细胞）和吸收细胞（R细胞）。
2. The high density nuclei are inferior collicular nucleus, oculomotor nucleus, trochlear nucleus and red nucleus. 血管密度较高的核团有下丘核、动眼神经核、滑车神经核和红核；
3. The high density nuclei are inferior collicular nucleus, oculomotor nucleus, trochlear nucleus and red nucleus. 血管密度较高的核团有下丘核、动眼神经核、滑车神经核和红核；
4. The high density nuclei are inferior collicular nucleus, oculomotor nucleus, trochlear nucleus and red nucleus. 血管密度较高的核团有下丘核、动眼神经核、滑车神经核和红核；
5. The dark cell nucleus and light cell cytoplasm of FLI cell body were examined in frontal cortex V, mesencephalic reticular formation and dorsal raphe nucleus in BD rat. 额皮质V层、中脑网状结构和中缝背核内见到胞核深染、胞浆浅染的FLI神经元胞体。
