6008
Using the technique of reverse transcription-polymerase chain reaction ( PCR ) with RNA isolated from lymphoid cell lines of the patient and of controls, no evidence was found that IVS1-10TC abnormally disrupted mRNA splicing or caused the absence of BRCA1 mRNA .
 mRNA, BRCA1, BRCA1 mRNA, lymphoid cell lines
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 mRNA, BRCA1, BRCA1 mRNA, lymphoid cell lines