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Syphilis

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Characteristics of Spirochetes: 1)    Vary in size from 5 to 500 µm in length. 2)    Many of them are free-living saprophytes (microorganism that lives on dead), while a few are obligate parasites. 3)    Are thin, helical (0.1–0.5 × 5–20 µm), and Gram negative . 4)    Are also elongated, motile, and flexible bacteria, twisted spirally along the long axis, giving these bacteria the name spirochetes (Spira meaning coiled, chait meaning hair). 5)    The presence of endoflagella . 6)    Exhibit three types of motility: (a) flexion and extension, (b) corkscrew- like rotatory movement, and (c) translatory motion. Examples of genera of Spirochetes: Treponema and Borrelia which causes diseases to human. Common diseases occurred by Spirochetes: Treponema: Are short and slender spirochetes with fine spirals and pointed ends. They are causative agent of syphilis. Morphology: 1)    Is a thi...

BioStatistics

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Definition of Statistics: Is a field of study concerned with (1) the collection, organization, summarization, and analysis of data; and (2) the drawing of inferences about a body of data when only a part of the data is observed. Definition of Biostatistics: When the data analyzed are derived from the biological sciences and medicine, we use the term biostatistics to distinguish this particular application of statistical tools and concepts. Definition of Descriptive Statistics: Are descriptive coefficients that summarize certain set of data which can be representative of entire or sample of population. It is divided into: a)      Measures of Central tendency. b)      Measures of Dispersion. Measures of Central tendency is a single value that describes the way in which a group of data cluster around a central value such as mode, mean and median and you can see definition from name itself. Or: In each of the measures of cent...