sentences:  A subsequent study by Jungeblut demonstrated that polio infected monkeys had lower vitamin C levels than others, and that the monkeys that escaped paralysis had the highest vitamin C levels.Jungeblut subsequently confirmed his findings in a larger study, finding that natural vitamin C was more effective than synthetic vitamin C, and as the disease progressed, larger and larger amounts of vitamin C were needed for therapeutic effect.In 1939, Albert Sabin reported that an experiment, employing the technique of "forcefully expelling the total amount [of Polio] in the direction of the olfactory mucosa, immediately drawing it back into the pipette, and repeating the process 2 to 3 times", was unable to confirm the results of Jungeblut, but found that "monkeys on a scorbutic diet died of spontaneous acute infections, chiefly pneumonia and enterocolitis, while their mates receiving an adequate diet remained well."