Bacteriological TechniquesGrowth PlateBone PlatesNeural PlateFracture Fixation, InternalDisease OutbreaksAgarMolecular Sequence DataTime FactorsEpiphysesChondrocytesTibiaGene Expression Regulation, DevelopmentalChick EmbryoCulture MediaIn Situ HybridizationModels, BiologicalPhylogenyBody PatterningAnti-Bacterial AgentsBone DevelopmentFracture HealingEmbryonic InductionDisease Transmission, InfectiousClavicleMutationMicrobial Sensitivity TestsBone ScrewsEctodermColony Count, MicrobialNervous SystemMesodermBase SequenceCells, CulturedPolymerase Chain ReactionCartilageSequence Analysis, DNAFractures, ComminutedHedgehog Proteins