LPS-Challenged TNFα Production, Prostaglandin Secretion, and TNFα/TNFRs Expression in the Endometrium of Domestic Cats in Estrus or Diestrus, and in Cats with Pyometra or Receiving Medroxyprogesterone Acetate - Ewelina Jursza; Anna Z. Szóstek; Mariusz P. Kowalewski; Alois Boos; Kiyoshi Okuda; Marta J. Siemieniuch (Mediators of Inflammation)