Simpsons Roasting on an Open Fire watch the dog's owner angrily disowning him for losing the race. Bart pleads with Homer to keep the dog as a pet, and he reluctantly agrees. When Bart and Homer return home, Homer finally comes clean to the family that he did not get his Christmas bonus; however, the family assumes Santa's Little Helper is their present and are overjoyed by Homer's gesture. The Simpsons family then celebrate by singing "Rudolph the Red-Nosed Reindeer". "The Simpsons" creator Matt Groening conceived of the idea for the Simpsons in the lobby of James L. Brooks's office. Brooks, the producer of the sketch
Helper dependent virus and capsid encoding DNA, plus helper DNA. Every cell that is successfully transfected with all three DNA fragments will produce the necessary proteins to produce infective viruses. These viruses will only have transgenic DNA encapsidated and therefore once they've infected a patient's cell, they will not be capable of reproducing. Helper dependent viruses can also occur in nature without being "gutted". The term satellite virus has been given to a large group of viruses that all require the presence of another virus to replicate. Many of these are plant viruses, but animal viruses can be seen in the case of