Physicochemical characteristics and biological activities of seasonal atmospheric particulate matter sampling in two locations of Paris - Ausset, Patrick.; Baeza-Squiban, Armelle; Baralle, Delphine.; Baulig, Augustin.; Dorlhene, Pascal.; Lefevre, Roger.; Marano, Francelyne.; Meyer, Martine.; Poirault, Jean-Jacques.; Schins, Roel.; Shi, Tingming.