title: Answer to January 2017 Photo Quiz.
authors.affiliation: Microbiology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.|Université Paris Descartes, Paris, France.|Institut National de la Santé et de la Recherche Médicale, Paris, France.
authors.forename: Fabrice
authors.initials: F
authors.lastname: Compain
authors.affiliation: Microbiology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Rossi
authors.affiliation: Microbiology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.
authors.forename: Clémence
authors.initials: C
authors.lastname: Richaud
authors.affiliation: Medical Reanimation, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Guerot
authors.affiliation: Microbiology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.
authors.forename: Hidayeth
authors.initials: H
authors.lastname: Rostane
authors.affiliation: Institut National de la Santé et de la Recherche Médicale, Paris, France.|Centre National de Référence des Légionelles, Centre de Biologie Est, Hospices Civils de Lyon, Lyon, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Jarraud
authors.affiliation: Microbiology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France isabelle.podglajen@egp.aphp.fr.|Université Paris Descartes, Paris, France.|Institut National de la Santé et de la Recherche Médicale, Paris, France.|Equipe Communication Intercellulaire et Infections Microbiennes, CIRB, Collège de France, Paris, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Podglajen
mesh_terms: D001992:Bronchoalveolar Lavage Fluid / Q000382:microbiology*; D005840:Gentian Violet; D006801:Humans; D016952:Legionella pneumophila / Q000145:classification* / Q000302:isolation & purification*; D008169:Lung Abscess / Q000382:microbiology*; D010619:Phenazines; D011014:Pneumonia / Q000175:diagnosis* / Q000382:microbiology
chemical_list: C035863:Gram's stain; D010619:Phenazines; D005840:Gentian Violet