In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 Antisense oligonucleotides complementary to the 5 ' end of PKC - zeta mRNA sequences significantly reduced the collagen lattice - stimulated alpha2 and MMP - 1 mRNA levels .
MMP - 1

 The non - major histocompatibility complex ( MHC ) - encoded CD1 family has recently emerged as a new antigen - presenting system that is distinct from either MHC class I or class II molecules .
CD1 family

 Antinuclear antibodies , rheumatoid factor and C - reactive protein in serum of normal women using oral contraceptives .

rheumatoid factor