Abstract: The present invention features modified polynucleotide sequences that mimic host cell DNA and methods of using such sequences for the genetic engineering of bacteria that are otherwise genetically intractable.

Abstract: A current limiting recessed lighting fixture prevents operation with lamps exceeding a rated wattage. Laws coming into effect place limits on lamp power consumption. The laws require that light fixtures include features to prevent a compliant lamp being later replaced by a higher wattage lamp. Further, limits have been placed on air flow from recessed lighting fixtures into ceiling plenums resulting in retention of heat in fixtures. Most high efficiency lamps include heat producing circuits in the lamp base and recessed lighting fixtures suitable of a lower wattage high efficiency lamp may overheat if a higher wattage replacement lamp is installed. Such overheating may drastically shorten the life if expensive LED lamps. The current limiting recessed lighting fixture shuts off when a lamp is installed which draws current above the rating for the fixture thereby addressing both the requirements of the new laws and also the potential overheating.