What is the definition of Vacancies Medical Research?

"Vacancies in medical research is like when your favorite doctor goes on a long vacation and leaves you all wondering why your pet skunks are now the only ones treating your broken ankle!"

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Now, here's an unsettling example sentence: "As the world's only medical research facility on the brink of bankruptcy loomed, Dr. Petunia decided to offer a 'vacancy' for the 'best new cancer cure' to anyone willing to sell their life insurance policy."