The present invention relates to the ability of SAP to suppress the differentiation of monocytes into fibrocytes. It also relates to the ability of IL-4 and IL-3 to enhance the differentiation of monocytes into fibrocytes. Methods and compositions for binding SAP, decreasing SAP levels and suppressing SAP activity are provided. Methods of using, inter alia, CPHPC, the 4,6-pyruvate acetyl of beta-D-galactopyranose, ethanolamines, high EEO agarose, IL-4, and IL-13, and anti-SAP antibodies and fragments thereof to increase monocyte differentiation into fibrocytes are provided. These methods are useful in a variety of applications, including wound healing. Wound dressings are also provided. Finally, the invention may include assays for detecting the ability of various agents to modulate monocyte differentiation into fibrocytes and to detect monocyte defects.