28561
The proton - coupled folate transporter ( PCFT ) plays a key role in intestinal folate absorption and loss - of - function mutations in the gene encoding this transporter are the molecular basis for hereditary folate malabsorption .
 folate, folate, folate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 folate, folate, folate