Thus , the 55 kd TNFR plays a decisive role in the host's defense against microorganisms and their pathogenic factors .
thus , the 55 kd tnfr plays a decisive role in the host's defense against microorganisms and their pathogenic factors .
O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O B-mono_cell O O B-other_organic_compound I-other_organic_compound O