请问干细胞归巢少怎么翻译啊？专家说我是中式英语

请叫我晓白

目前已有多种干细胞(如胚胎干细胞、间充质干细胞)应用于心肌缺血损伤后心肌再生的研究，但由于这些细胞心脏归巢少、心血管再生潜能有限等原因而限制了其广泛应用。
4 z$ ]1 \( h1 F7 H9 u6 A我翻译的：Various stem cells, such as embryonic stem cells and mesenchymal stem cells, have been applied to the study of myocardial regeneration following ischemic injury, but their wide application is limited by a series of factors, such as rare cells homing to heart and restricted regenerative potential./ q! o9 {3 e, w) y# I9 w- w
请问归巢细胞少怎么翻译，这句话怎么翻译才好呢？

我思故我在

细胞归巢细胞少：the number of homing cells is small