Tips for upcoming interview for biology lab job?

I recently graduated with my B.S. in biology and have been applying for jobs in the field ever since. I got my first call back, had a phone screening, and my in-person interview is this upcoming week. I'm really nervous and could use some advice as I've only ever applied for retail/service positions in the past as an undergrad, this will be my first "real" job interview, at least in my mind. The job is basically working for a bloodbank processing and preparing donations. Any advice is definitely appreciated!

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