19384
However , in an effort to explain incomplete inhibition of PLTX cytotoxicity , some studies suggest the possibility of two different binding sites on Na + / K + - ATPase .
 Chemical: PLTX; Chemical: Na +; Chemical: K +
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: PLTX; Chemical: Na +; Chemical: K +