%0 Journal Article %A Djamila Chabane %A Akym Assani %A Nadia Bouguedoura %A Robert Haïcour %A Georges Ducreux %T Induction of callus formation from difficile date palm protoplasts by means of nurse culture %J Comptes Rendus. Biologies %D 2007 %P 392-401 %V 330 %N 5 %I Elsevier %R 10.1016/j.crvi.2007.02.006 %G en %F CRBIOL_2007__330_5_392_0