7950
Similar characteristics were also observed for uptake of TEA ; however , uptake of phenformin into mitochondria of organic cation / carnitine transporter 1 ( OCTN1 ) knockout mice was lower than that in wild - type mice , whereas uptake of TEA was comparable between the two strains , suggesting the involvement of distinct transport mechanisms for these two cations in mitochondria .
 TEA, phenformin, carnitine, TEA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 TEA, phenformin, carnitine, TEA