Acronyms are commonly used for the names of institutions and organizations. No full stops are placed between the letters.
Minor Types of Word-formation
All acronyms can be divided into two groups. Acronyms in the first group are often pronounced as series of letters: EEC (European Economic Community), FBI (Federal Bureau of Investigation), PC (personal computer).
Acronyms in the second group are pronounced according to the rules of reading: AIDS (Acquired Immune Deficiency Syndrome), NATO (North Atlantic Treaty Organization).
Minor Types of Word-formation
Some words of the second group can be written without capital letters as they are no longer recognized as acronyms: laser(light amplification by stimulated emissions of radiation), radar (radio detection and ranging), jeep (general purpose car).