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[33], 'production.': [34], 'In': [35], 'addition': [36], 'insolubility': [39], 'cellulose': [41, 81, 156, 175, 206, 219, 229], 'hemicellulose,': [43], 'tight': [45], 'association': [46], 'lignin': [48, 65, 83, 136, 149, 184, 198, 203, 212, 255], 'with': [49, 142, 182], 'these': [50, 138, 289], 'intensifies': [52], 'problem': [54], 'wall': [57, 104, 117, 223, 235], 'recalcitrance.': [58], 'To': [59], 'determine': [60], 'extent': [62], 'which': [64], 'influences': [66], 'cellulose,': [71], 'specifically': [72], 'in': [73, 84, 137, 173, 177, 194, 220, 283], 'secondary': [74], 'contain': [77], 'majority': [79], 'plants,': [85], 'we': [86, 109, 168], 'used': [87], 'model': [89, 294], 'system': [90, 113, 265], 'consisting': [91], 'cultured': [93, 245], 'xylem': [94, 247], 'cells': [95, 128, 139, 181, 248, 290], 'from': [96], 'Zinnia': [97, 246], 'elegans.': [98], 'Rather': [99], 'than': [100], 'using': [101, 160], 'purified': [102], 'substrates': [105], 'or': [106, 146], 'tissue,': [108], 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