Tissue samples were taken from extraembryonic structures (intercotyledonary membrane, placentome, umbilical cord, amniotic fluid, meconium), and organs including CNS (brain, cerebellum, brainstem, spinal cord), lymphoid organs (prescapular, mesenteric, submandibular, mediastinic lymphnodes, thymus and spleen), other inner organs and tissues (gonads, adrenal gland, liver and lung) and musculoskeletal structures (femoral cartilage, Musculus Semitendinosus) for viral RNA detection.
Source: wiktionary