Peptides are short chains of amino acids — the same building blocks that make up proteins — linked together in a defined sequence. They occur naturally throughout biological systems, where they take part in processes such as cell signalling, tissue repair and immune regulation. Because peptides are smaller than full proteins, they can interact with cellular receptors in a more targeted way, which is part of why they are so widely used as study materials in biochemistry and pharmacology research. Interest in peptides has grown considerably over the past decade as researchers explore their role across a broad range of biological pathways. Every peptide supplied by Gamma Labs Research is manufactured to a research-grade purity specification and delivered as a lyophilized (freeze-dried) powder, giving laboratories a consistent, well-characterised reference material to work from.