1684
We examined the paired tumour and normal - tissue specimens of 86 CRC patients for the occurrence of aberrations in the mutation cluster region ( MCR ) of the APC gene and exon 3 of the beta - catenin gene by polymerase chain reaction - single - strand conformation polymorphism ( PCR - SSCP ) and / or PCR - direct sequencing .
 Anatomy: tumour; Anatomy: tissue specimens; Anatomy: CRC
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: tumour; Anatomy: tissue specimens; Anatomy: CRC