487
Pulse - chase analysis using proband fibroblasts revealed that the W474C - containing alpha - subunit precursor was normally synthesized , but not phosphorylated or secreted , and the mature lysosomal alpha - subunit was not detected .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 None