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  2. Prostate-specific antigen - Wikipedia

    en.wikipedia.org/wiki/Prostate-specific_antigen

    Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene.PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland in men and the paraurethral glands in women.

  3. Doubling time - Wikipedia

    en.wikipedia.org/wiki/Doubling_time

    The notion of doubling time dates to interest on loans in Babylonian mathematics. Clay tablets from circa 2000 BCE include the exercise "Given an interest rate of 1/60 per month (no compounding), come the doubling time." This yields an annual interest rate of 12/60 = 20%, and hence a doubling time of 100% growth/20% growth per year = 5 years.

  4. Population dynamics - Wikipedia

    en.wikipedia.org/wiki/Population_dynamics

    The doubling time (t d) of a population is the time required for the population to grow to twice its size. [24] We can calculate the doubling time of a geometric population using the equation: N t = λ t N 0 by exploiting our knowledge of the fact that the population (N) is twice its size (2N) after the doubling time. [20]

  5. Rule of 72 - Wikipedia

    en.wikipedia.org/wiki/Rule_of_72

    In finance, the rule of 72, the rule of 70 [1] and the rule of 69.3 are methods for estimating an investment's doubling time. The rule number (e.g., 72) is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.

  6. Chemostat - Wikipedia

    en.wikipedia.org/wiki/Chemostat

    Therefore, the doubling time t d becomes a function of dilution rate D in steady state: t d = ln ⁡ 2 D {\displaystyle t_{d}={\frac {\ln 2}{D}}} Each microorganism growing on a particular substrate has a maximal specific growth rate μ max (the rate of growth observed if growth is limited by internal constraints rather than external nutrients).

  7. Prostate cancer screening - Wikipedia

    en.wikipedia.org/wiki/Prostate_cancer_screening

    Prostate cancer screening is the screening process used to detect undiagnosed prostate cancer in men without signs or symptoms. [1] [2] When abnormal prostate tissue or cancer is found early, it may be easier to treat and cure, but it is unclear if early detection reduces mortality rates.

  8. Prostate cancer - Wikipedia

    en.wikipedia.org/wiki/Prostate_cancer

    Prostate cancer is the uncontrolled growth of cells in the prostate, a gland in the male reproductive system below the bladder.Abnormal growth of prostate tissue is usually detected through screening tests, typically blood tests that check for prostate-specific antigen (PSA) levels.

  9. Basic reproduction number - Wikipedia

    en.wikipedia.org/wiki/Basic_reproduction_number

    is the average number of people infected from one other person. For example, Ebola has an of two, so on average, a person who has Ebola will pass it on to two other people.. In epidemiology, the basic reproduction number, or basic reproductive number (sometimes called basic reproduction ratio or basic reproductive rate), denoted (pronounced R nought or R zero), [1] of an infection is the ...