有趣|salt-and-pepper expression pattern

这个名词的解释：
【 salt-and-pepper expression pattern 】 ： Notably, Pdgfra was specifically expressed by cells in Population 2, whereas Pdgfrb was expressed by all cells apart from Population 4. Fap, S100a4 (encoding FSP-1) and Acta2 (encoding α-SMA) displayed a salt-and-pepper expression pattern in all four CAF populations.

文章：Spatially and functionally distinct subclasses of breast cancer-associated fibroblasts revealed by single cell RNA sequencing

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