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The purpose of this investigation was to evaluate firstly whether different protein expression patterns exist in primary squamous cell lung carcinomas of patients with and without lymph node involvement and secondly , whether or not different patterns exist in tumours with positive lymph nodes .
 Anatomy: primary squamous cell lung carcinomas; Anatomy: lymph node; Anatomy: tumours; Anatomy: lymph nodes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: primary squamous cell lung carcinomas; Anatomy: lymph node; Anatomy: tumours; Anatomy: lymph nodes