Scientists made 'serial' observations over a period of two weeks.
The pictures are numbered and arranged in 'serial' order.
a 'serial' cable/connection/port/printer
(..) I may have asked all my questions. Good. Do you have questions for Erica? Yeah, actually. So you read a file that you liked... ...and then you gave the agency the serial number and they contacted us? Yes. Our system ensures total anonymity. - We're very proud of it. - You should be. (..)2004 TvShow: Friends Title: The One with the Birth Mother Season: 10 Episode 9