Examlex
Secondary data are data that have been previously collected for the current project purposes.
Hemoglobin
A component of red blood cells, hemoglobin serves the crucial function of delivering oxygen from the lungs to tissues across the body and returning carbon dioxide from the tissues to the lungs.
Collagen
The main structural protein found in skin and other connective tissues, providing strength and elasticity.
Enzymes
Biological catalysts that speed up chemical reactions in the body without being consumed by the reactions.
Hormones
Chemical messengers produced by glands that regulate various functions in the body by acting on specific target organs.
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