microscopic view of fibroblasts stained with green, pink and blue fluorescence

Understanding cell function is critical to cellular research. Thermo Fisher Scientific offers a broad range of cell function assays and reagents to elucidate key cellular processes including apoptosis, cell proliferation, cell cycle and viability, oxidative stress, internalization processes like phagocytosis and endocytosis as well as indicators for ion homeostasis. These cell function assays can be used on multiple instrument platforms including microscopy, flow cytometry, microplate reader, and high content screening.

See also cell structure reagents ›

Find antibodies, proteins, and assay kits for the study of blood vessel growth through the processes of angiogenesis and vasculogenesis.

Find assays and antibodies for characterizing programmed cell death including determining which cells are apoptotic, live, and necrotic.

Find assays to monitor the progression of autophagy as cells digest damaged or defective molecules or devour existing proteins and organelles to generate key nutrients for survival.

Find products to monitor cell cycle including antibodies as well as fluorescent dyes and proteins for use on multiple instrument platforms.

We have a diverse array of platforms and products for studying cell function and metabolic processes. Metabolic activity measurement can also be used as a metric for cell viability or proliferation.

Find a wide selection of verified products to measure cell proliferation by techniques including metabolic activity, tracking DNA content, or new DNA synthesis.

Cell movement that occurs during processes like angiogenesis, metastasis or lymphocyte migration can be studied using fluorescent cell stains, and antibodies to target proteins critical to these processes.

Find easy and sensitive assays to determine cell viability based on membrane integrity or cellular function across multiple platforms.

Cytotoxicity can be monitored using assays that measure changes in viability, proliferation, mitochondrial function, phospholipidosis/steatosis, DNA damage, and cell cycle.

We offer a wide range of fluorescent dyes and probes including indicators for calcium, magnesium, sodium, potassium, pH and membrane potential.

We provide a variety of fluorescent tools to track different parameters in oxidative stress.

We offer a wide range of products for exploring the processes of endocytosis, exocytosis, and phagocytosis.

Find reagents and assays to label newly synthesized protein with both spatial and temporal resolution to monitor protein equilibrium and the consequences of its perturbation in disease and in experimental models.

Explore our extensive portfolio of high-quality primary and secondary antibodies with the easy-to-use antibody selection tool.


Cell Analysis Learning Center
Access educational resources for better experiment planning and execution.


Cell Analysis Support Center
Relevant technical information, tips and tricks, and answers to everyday problems.

Cell Analysis Protocols
Explore our collection of apoptosis protocols for apoptosis induction and detection.

For Research Use Only. Not for use in diagnostic procedures.