Too few proteins lead to night blindness, perifollicular hyperkeratosis, xerophthalmia, keratomolacia, increased morbidity and mortality in young children.

维生素不足可导致夜盲、毛囊周角化、物笥眼炎、儿童发病率我死亡率增高等。

Histopathologic examination showed hyperkeratosis of epidermis, increased thickness of the granular layer and dilation of subpapillary vessels filled with red blood cells.

组织病理学检查示表皮角化,呈乳头瘤增生,颗粒层增厚,真皮乳头见大量增生扩张的毛血管,管腔内含红胞,血管周围胞浸润。