Another study compared the effects in rats receiving during days 10 to 21 after Trichinella spiralis - induced infection either Lactobacillus paracaseiLactobacillus johnsoniiBifidobacterium longum, or Bifidobacterium lactis; Lb paracasei but not the other LAB attenuated muscle hyper-contractility, reduced the infection-associated Th- 2 response and muscle levels of TGF-β, COX-2 and PGE2 [55]. The gene discussed is TGFB1; the disease is infection.