Search results
Results from the WOW.Com Content Network
Biological specimens in an elementary school science lab. A biological specimen (also called a biospecimen) is a biological laboratory specimen held by a biorepository for research. Such a specimen would be taken by sampling so as to be representative of any other specimen taken from the source of the specimen. When biological specimens are ...
(i) Collection or accession occurs when a specimen arrives at the biorepository. Information about the specimen is entered into the laboratory information management system ("LIMS"), which tracks information about all of the specimens in the biorepository. Typical information linked to a specimen would be the specimen's origin and when it ...
Viral transport medium (VTM) is a solution used to preserve virus specimens after collection so that they can be transported and analysed in a laboratory at a later time. Unless stored in an ultra low temperature freezer or in liquid nitrogen , virus samples, and especially RNA virus samples, are prone to degradation.
Some specimen types also require special treatment, such as immediate mixture with an additive, or storage at a certain temperature. [5] After extraction , all specimen containers must be labeled with at least two of the following identifiers (at the time of collection): patient's name, date of birth, hospital number, test request form number ...
In terms of sampling technique, a biopsy generally refers to a preparation where the normal tissue structure is preserved, availing for examination of both individual cells and their organization for the study of histology, while a sample for cytopathology is prepared primarily for the examination of individual cells, not necessarily preserving the tissue structure.
A scientific collection is a collection of items that are preserved, catalogued, and managed for the purpose of scientific study. [1]Scientific collections dealing specifically with organisms plants, fungi, animals, insects and their remains, may also be called natural history collections or biological collections. [2]
Collection in the field and transportation provided considerable challenges. Initially, dried specimens together with descriptions and drawings were the main way of adding to the knowledge of the flora. Examples include the drawings by local artists described by Wallich at the botanical gardens in Calcutta in the early 19th century. [6]
Collection of spiders preserved in alcohol (spirit collection) "Wet" specimen collections are stored in different solutions. A very old method is to store the specimen in 70% ethanol with various additives after fixing with formalin [2] or in these days sometimes with a salt-solution. [3] Some methods are very useful, because the color can be ...