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.
Main article: Invention of radio. The idea of wireless communication predates the discovery of radio with experiments in wireless telegraphy via inductive and capacitive induction and transmission through the ground, water, and even train tracks from the 1830s on.