3449459 rfhSP-D recombinant fragment of human SP-D 17 3449460 rfhSP-D recombinant form of human SP-D 2 3449458 rfhSP-D recombinant fragment of human surfactant protein D 2 3449461 rfhSP-D recombinant form of trimeric lectin domains of human SP-D 1