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-gram, -gramme: record or picture Greek γράμμα (grámma), picture, letter, writing angiogram, gramophone -graph: instrument used to record data or picture Greek -γραφία (-graphía), written, drawn, graphic interpretation electrocardiograph, seismograph-graphy: process of recording
Gram stain (Gram staining or Gram's method), is a method of staining used to classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria. It may also be used to diagnose a fungal infection. [1] The name comes from the Danish bacteriologist Hans Christian Gram, who developed the technique in 1884. [2]
Both gram-positive and gram-negative bacteria commonly have a surface layer called an S-layer. In gram-positive bacteria, the S-layer is attached to the peptidoglycan layer. Gram-negative bacteria's S-layer is attached directly to the outer membrane. Specific to gram-positive bacteria is the presence of teichoic acids in the cell wall. Some of ...
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
Medical terminology is a language used to precisely describe the human body including all its components, processes, conditions affecting it, and procedures performed upon it. Medical terminology is used in the field of medicine .
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The usual "Gram-positive" type does not have an outer lipid membrane, while the typical "Gram-negative" bacterium does. The terms "diderm" and "monoderm", coined to refer to this distinction only , is a more reliable and fundamental characteristic of the bacterial cells.
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