Do FASTQ files from ArrayExpress already have adapter sequences trimmed?

2

Hi, I am using RNA-Seq data from ArrayExpress and I'm having difficulty finding out whether its necessary to use some software to remove adapter sequences. The FASTQ submission specifications state that no technical adapter sequences are allowed which suggest that the adapter sequences should already be removed but it could also be stating not to submit an adapter sequence FASTQ file. I'm having difficulty finding information on this so any insight is appreciated.


adapters


ArrayExpress

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