21886
The anti - tumour efficacy of interferon against axillary metastases of a highly lymph - metastatic variant of human breast MDA - MB - 231 carcinoma was significantly increased by SC administration of lymph - targeted IFN - PEG12 when compared to the administration of IFN on the ipsilateral side to the axillary metastasis .
 Chemical: PEG12
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: PEG12