*4.2. Cell Line for In Vitro Evaluation of LINC01133 Function*

Endometriotic epithelial cell line 12Z established and characterized by the laboratory of Professor Starzinski-Powitz [51,52] was kindly provided for our in vitro studies. The cells were cultured in Dulbecco's modified Eagle's medium (DMEM-F12) containing penicillin/streptomycin in final concentrations of 50 U/mL and 50 µg/mL, respectively and 10% *v*/*v* fetal calf serum (FCS). The cells were maintained in a 37 ◦C CO2-humified incubator. Cells were tested and found to be negative for mycoplasm infection. All cell culture reagents were purchased from Thermo Fisher Scientific (Waltham, MA, USA) or Sarstedt (Nümbrecht, Germany).
