The material cells secrete around themselves, holding a tissue together, is the:

1. Animal cells are not simply pressed against one another. 2. They secrete materials into the space around them. 3. Collectively, these materials are called the extracellular matrix. 4. A cell wall is a plant structure, so it cannot be the general animal-tissue answer. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 4 'Cell Structure', sections 4.1-4.6_