Methylation-specific quantitative polymerase chain reaction was performed on all samples. Pathology reports from esophagectomy specimens were used to define response to treatment. Thirteen (37%) of 35 patients were responders, and 22 (63%) of 35 patients were nonresponders. The number of methylated genes per patient was significantly lower in responders than in nonresponders (1.4 vs 2.4 genes per patient; Student t test, P = .026).
Marconi was not the first to invent the radio, however. Four years before Marconi started experimenting with wireless telegraph, Nikola Tesla, a Serb who moved to the USA in 1884, invented the theoretical model for radio.wenty years after the telephone was invented and music was first sent down a telephone line, Guglielmo Marconi sent radio signals. Marconi (1874-1937) was born in Italy and studied at the University of Bologna.
The voice was that of Reginald Fessenden (1866-1932), an inventor and engineer who had been working on producing voice radio since Marconi's first wireless broadcast across the Atlantic. After his Christmas experiment, Fessenden continued working to make voice radio practical.heir first nationwide broadcast was the 1927 Rose Bowl football game from Pasadena. The burgeoning industry made the airwaves so jammed and chaotic that the Federal Radio Commission was established in 1927 to assign frequencies to broadcasters.