Assay conditions were selected to enable measurement of free light chains in the concentration range between 0.1 and 20 mg/l. The normal range for free lambda chains in serum was found to be 0.4-4.2 mg/l and for free kappa chains it was 1.6-15.2 mg/l.he normal range for free lambda chains in serum was found to be 0.4-4.2 mg/l and for free kappa chains it was 1.6-15.2 mg/l.
The Atari 2600, or Atari VCS before 1982, is a home video game console released on September 11, 1977 by Atari, Inc. It is credited with popularizing the use of microprocessor-based hardware and ROM cartridges containing game code, a format first used with the Fairchild Channel F game console.
As video games made their way into homes, their popularity skyrocketed and others soon began to develop competing systems. Nolan Bushnell and Ted Dabney created Atari Computers in 1972. In 1975, Atari released Pong as a home video game, leading to a huge increase in the popularity of video games. Since those early years, many different types of video games and consoles have come and gone. Today, Microsoft's Xbox and Sony's Playstation remain the two most popular video game consoles, while children and adults alike still enjoy playing video games on their computers and smartphones.