Comité Interamericano De Sociedades De Microscopía Electrónica CIASEM is a regional umbrella organization with responsibility: To hold an Interamerican Congress of Microscopy every two years. To sponsor regional meetings and conferences To sponsor publication of Acta Microscopica To appoint the Editor-in-Chief of Acta Microscopica To set up committees and other bodies To initiate, promote and co-ordinate exchange programs between member societies of other continents To participate in joint committees with other scientific bodies in matters of interest to the CIASEM.