10994
With the human Rhotekin cDNA as a probe , Northern hybridization revealed that a 4 . 0 - kb transcript was expressed at a high level in prostate and at a middle level in 13 of 16 tissues examined , but it cannot be detected in liver and lung tissues .
 human Rhotekin cDNA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 human Rhotekin cDNA