pyrosis

1. The apoptotic features of apoptotic positive cells found in TUNEL staining were shrinking cell body, nuclear pyrosis, nuclear fragmentation and the formation apoptotic body.
   TUNEL染色所见阳性凋亡细胞，其凋亡特征为胞体缩小、核固缩、核碎裂、凋亡小体形成。
2. It occurs more often in men than women, by a ratio of 2.9:1. The most frequent symptoms are dysphagia, retrosternal pain and pyrosis.
   男多于女，男女之比为2.9：1。

noun

1. a painful burning sensation in the chest caused by gastroesophageal reflux (backflow from the stomach irritating the esophagus)

   Synonym:    heartburn