Protease secretions by the invading blastocyst induce calcium oscillations in endometrial epithelial cells via the protease-activated receptor 2 oleh Aurélie Hennes, Johanna Devroe, Katrien De Clercq, Martina Ciprietti, Katharina Held, Katrien Luyten, Nele Van Ranst, Nina Maenhoudt, Karen Peeraer, Hugo Vankelecom, Thomas Voets, Joris Vriens