@article{KreisRitterLouwenetal.2020,
  author    = {Nina-Naomi Kreis and Andreas Hans Ritter and Frank Louwen and Juping Yuan},
  title     = {A message from the human placenta: structural and immunomodulatory defense against SARS-CoV-2},
  journal   = {Cells},
  volume    = {9},
  number    = {8, art. 1777},
  pages     = {1 -- 24},
  doi       = {10.3390/cells9081777},
  year      = {2020},
}