CD14 and idiopathic pulmonary fibrosis: Authors also performed single-cell RNA-sequencing analysis of cell suspensions from IPF lung tissues and healthy donors and showed a progression in transcriptomic states from monocytes (CD14+CD206neg/loCD69neg/lo) to early transitional macrophages (CD14+CD206lo, CD68lo), to later transitional macrophages (CD14+CD206lo, CD68mid-hi), to lung macrophages (CD206mid-hiCD68mid-hiCD14neg/lo) (65).