1382
Mammalian ribonucleotide reductase shows S - phase specific expression and consists of two non - identical subunits , proteins R1 ( large subunit ) and R2 ( small subunit ) .
 GENE: ribonucleotide reductase; GENE: proteins R1; GENE: R2
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: ribonucleotide reductase; GENE: proteins R1; GENE: R2