The Types segmentation of the market classifies eukaryotic expression platforms into mammalian, insect, plant, and yeast systems, each delivering distinct biochemical capabilities. Mammalian cells—chiefly CHO and HEK293—provide the most authentic human‑like post‑translational modifications, making them the preferred choice for high‑value therapeutics despite higher production costs. Insect cell lines such as Sf9 and High Five, employed in baculovirus‑mediated expression, balance yield and complexity, serving both vaccine antigens and recombinant proteins where moderate glycosylation is acceptable. Plant‑based platforms, exemplified by Nicotiana benthamiana, enable rapid, scalable production of viral‑like particles and antibodies, capitalizing on low‑cost cultivation and reduced contamination risk. Yeast systems, particularly Pichia pastoris, offer high cell density fermentation and efficient secretion of proteins that require simple glycosylation patterns, positioning them in the industrial enzyme and biosimilar space. Each type contributes uniquely to the overall market size, with mammalian systems capturing the premium segment, while insect, plant, and yeast platforms expand the market’s breadth through cost‑effective alternatives.