Our bodies derive an abundance of hematin from food 人体从食物中取得大量的正铁血红素。
2.
When u . unicinctus is exposed to sulfide for a long time , the relative amounts of hemoglobin , heme and hematin in the coelomic fluid change in regular patterns . the rna extracted from the coelomic fluid show that some genes express during that process 长期生活于含有硫化物的水体中，单环刺?体腔液中与血红素相关的生化组分将随时间延长而发生有规律的变化；从中提取的rna也显示这一过程中伴随着相应的基因表达。
