The ASCB meeting brings scientists from all levels to talk about cell biology, which is actually almost anything “biology”. But there’s also a full program dedicated to other matters, like science careers, science publishing, science communications and science policy. This is also a great venue for companies to show their products, and for organizations/institutions to recruit new members. If I remember the numbers correctly, there were over 550 oral presentations and over 2,700 posters. I overheard someone saying there were ~6000 people attending the meeting. I typically go to RNA meetings that are mostly in the lower 100’s of participants. So, to me, that’s a large meeting.