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"From the practical point of view, the susceptibility to infection of the guinea pig proved to be the most useful step forward. Today, all laboratories use this animal for preserving the virus."
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"Time is irreplaceable asset."
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Personal Development
"The gift of today is the gift of time."
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Personal Development
"The gift of today, blessings of the moment."
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Personal Development
"Write a daily gratitude."
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Personal Development
"Today's experience prepares you for a better tomorrow."
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Personal Development
"Today is a special day that will go by very fast, so let's take every second to make the most out of every moment."
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Personal Development
"The best of today lays a great foundation for tomorrow."
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Personal Development
"Seek the blessings each day brings."
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Personal Development
"Tomorrow is a new day, begin it well and serenely and with too high a spirit to be encumbered with your old nonsense."
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Personal Development
"There is no rerun of life. Rejoice while breathe."
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"Just as the only reservoir for the typhus virus in nature is provided by man, so the only vector of infection is the louse. The bite of the louse is not virulent immediately after the infecting meal. It becomes so only towards the 7th day following infection."
Nature
"My first attempts to transmit typhus to laboratory animals, including the smaller species of monkeys, had failed, as had those of my predecessors, for reasons which I can easily supply today."
Animals
"It did not seem likely that I was destined to undertake research on typhus."
Research
"I demonstrated the characteristics of experimental fever. It appears after an incubation period which is never less than five days. It follows the same pattern as natural fever in man, but is of shorter duration and less pronounced."
Man
"At the time when I was conducting my research there was no known method for taking the guinea pig's temperature. I demonstrated a technique which is now widely used."
Time
"I was less successful in my attempts to effect preventive vaccination against typhus by using the virus and in trying to produce large quantities of serum using large animals."
Success
"The discovery that I soon made that the guinea pig was also susceptible to infection made it possible for me, from the third year on, to preserve the virus on this animal."
Discovery
"From the practical point of view, the susceptibility to infection of the guinea pig proved to be the most useful step forward. Today, all laboratories use this animal for preserving the virus."
Today
"Of all the problems which were open to me for study, typhus was the most urgent and the most unexplored. We knew nothing of the way in which contagion spread."
Nothing
"The fact that I was fortunate enough to escape contagion, in spite of frequent, sometimes daily contacts with the disease, was because I soon guessed how it spread."
Disease
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