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A laboratory (UK: /ləˈbɒrətəri/; US: /ˈlæbərətɔːri/; colloquially lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.
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Karyogram of a male with Down syndrome.
Well the stretchability relates to bubble size because the strechier the gum is the bigger bubble it will be able to make.