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A set of 40 clinical samples that were classified as EBV seropositive ( n = 16 ) , seronegative ( n = 16 ) or potentially cross - reactive sera ( n = 8 ) were assessed for reactivity with Eb1 - 4 and H1 peptides individually .
 Anatomy: samples; Anatomy: sera
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: samples, sera 
Answer:
 Anatomy: samples; Anatomy: sera