title: A quantitative method to analyze Drosophila pupal eye patterning.
abstract: BACKGROUND
  The Drosophila pupal eye has become a popular paradigm for understanding morphogenesis and tissue patterning. Correct rearrangement of cells between ommatidia is required to organize the ommatidial array across the eye field. This requires cell movement, cell death, changes to cell-cell adhesion, signaling and fate specification.
  
  
  METHODS
  We describe a method to quantitatively assess mis-patterning of the Drosophila pupal eye and objectively calculate a 'mis-patterning score' characteristic of a specific genotype. This entails step-by-step scoring of specific traits observed in pupal eyes dissected 40-42 hours after puparium formation and subsequent statistical analysis of this data.
  
  
  CONCLUSIONS
  This method provides an unbiased quantitative score of mis-patterning severity that can be used to compare the impact of different genetic mutations on tissue patterning.
authors.affiliation: Department of Developmental and Regenerative Biology, Mount Sinai Medical School, New York, New York, USA.
authors.forename: Ruth I
authors.initials: RI
authors.lastname: Johnson
authors.forename: Ross L
authors.initials: RL
authors.lastname: Cagan
mesh_terms: D000818:Animals; D019521:Body Patterning; D002448:Cell Adhesion; D015816:Cell Adhesion Molecules, Neuronal / Q000378:metabolism; D019070:Cell Lineage; D003627:Data Interpretation, Statistical; D004330:Drosophila / Q000196:embryology* / Q000502:physiology*; D018507:Gene Expression Regulation, Developmental; D005838:Genotype; D008853:Microscopy / Q000379:methods; D009154:Mutation; D010641:Phenotype; D017956:Photoreceptor Cells, Invertebrate / Q000378:metabolism*; D011679:Pupa; D015398:Signal Transduction
chemical_list: D015816:Cell Adhesion Molecules, Neuronal