• MSA (Microscopy Society of America) membership information. • MAS (Microanalysis Society) membership information. Registration Cancellation Policy: Refund requests will be honored (less $65 processing fee) if received in writing by June 20, 2024. No refunds will be given after June 20, 2024. Membership fees will not be included in the refund. To begin your registration, please make a selection below.