b1a may refer to: *

Rockwell B-1A Lancer The Rockwell B-1 Lancer is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force. It is commonly called the "Bone" (from "B-One"). It is one of three strategic bombers serving in the U.S. Air Force fleet along with ...

, U.S. USAF bomber aircraft *

GSR Class B1a The Great Southern Railways Class 800 steam locomotives were built principally for express passenger work on the Dublin to Cork main line of that company. These locomotives were designed under the supervision of E. C. Bredin with his Chief Drau ...

, a steam locomotive class * B1A section, a WWII counterespionage unit in the

Double-Cross System The Double-Cross System or XX System was a World War II counter-espionage and deception operation of the British Security Service (a civilian organisation usually referred to by its cover title MI5). Nazi agents in Britain – real and false – w ...

(XX System) * B1a cells, a type of

B1 cell B1 cells are a sub-class of B cell lymphocytes that are involved in the humoral immune response. They are not part of the adaptive immune system, as they have no memory, but otherwise, B1 cells perform many of the same roles as other B cells: makin ...

* B1A postal code, see List of postal codes of Canada: B

See also