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. (Method of 2) transplanting nerving: Can choose side big nerve, inside skin nerve or sural bowel nerve, but with ear big nerve is the most commonly used. 移植神经切除方法：可选用耳大神经、股内侧皮神经或腓肠神经，但以耳大神经最常用。
3. The frenulum is innervated both by somatic and autonomic nerves, the somatic nerve is derived from the penile dorsal nerve and the perineal nerve, the autonomic nerve comes from pelvic plexus. 包皮系带接受躯体神经和自主神经双重支配，躯体神经来自于阴茎背神经和会阴神经，自主神经来自于盆丛。
4. Malignant peripheral nerve sheath tumor (MPNST) was a spindle cell sarcoma, which could arise from nerve tissue, neurofibroma or showing nerve sheath differentiation. 恶性周边神经髓鞘肿瘤是从神经组织、神经纤维瘤或是呈现神经髓鞘分化的梭状细胞肉瘤。
5. The mature archegonia contained neck cell, ventralcanal cell and egg cell, but neck cell and ventralcanal cell has degenerated. 成熟的颈卵器含有颈细胞、腹沟细胞和卵细胞，但颈细胞和腹沟细胞已经退化。
