What things other than animals can scientist test on?

In addition to animals, scientists can test a wide variety of other subjects and materials, including:

Cell cultures: Scientists can grow cells from living organisms, such as bacteria, yeast, and mammalian cells, in a laboratory setting. These cell cultures can be used to study a range of biological processes and test the effects of different substances, such as drugs or toxins.

Tissue models: Scientists can create three-dimensional models of tissues using various techniques, such as organoids, scaffolds, and hydrogels. These tissue models can be used to study tissue development and function, and test the effects of different substances on tissues.

Organoids: Organoids are miniature organs grown in the laboratory from stem cells. They provide a more complex and realistic model of organ structure and function compared to cell cultures, allowing researchers to study organ-specific processes and responses to different conditions.

Biomaterials: Scientists can design and test various biomaterials, such as implants, drug delivery systems, and tissue scaffolds. These biomaterials are often used in medical applications and need to be evaluated for their safety, compatibility, and effectiveness.

Environmental samples: Scientists can collect and analyze environmental samples, such as soil, water, and air, to assess the presence and impact of pollutants, microorganisms, or other substances.

Computer simulations: Computational methods and mathematical modeling can be used to simulate and predict the behavior and interactions of complex biological systems. Computer simulations can provide insights into biological processes and help researchers design experiments or develop new drugs and treatments.

Data analysis: Scientists can analyze large amounts of data from experiments, clinical trials, or other sources using statistical and computational methods. Data analysis can identify patterns, relationships, and trends that help researchers understand biological processes or develop new hypotheses for further investigation.