Functions as an endocytic receptor on a small subset of myeloid cells specialized for the uptake and processing of material from dead cells. Recognizes filamentous form of actin in association with particular actin-binding domains of cytoskeletal proteins, including spectrin, exposed when cell membranes are damaged, and mediate the cross-presentation of dead-cell associated antigens in a Syk-dependent manner. {ECO:0000269|PubMed:18497879, ECO:0000269|PubMed:22483802}. This is the function of CLEC9A (C-type lectin domain containing 9A, ENSG00000197992).