Nonspecific material is brought into a cell through a process called endocytosis. This is a general term for the process where a cell engulfs material from its external environment and brings it inside.

There are three main types of endocytosis:

1. Phagocytosis: This is the process of engulfing large particles, like bacteria or cell debris. The cell membrane extends around the particle, forming a vesicle that pinches off and brings the particle inside the cell.

2. Pinocytosis: This is the process of engulfing fluids and dissolved solutes. The cell membrane invaginates (folds inward), forming a small vesicle that pinches off and brings the fluid inside the cell.

3. Receptor-mediated endocytosis: This is a more specific process where the cell uses receptors on its surface to bind to specific molecules, triggering the formation of a vesicle and bringing the bound molecule inside.

While receptor-mediated endocytosis is specific, the other two types of endocytosis are considered nonspecific as they do not rely on specific receptors to bind to the material being brought into the cell.

In summary, endocytosis, particularly phagocytosis and pinocytosis, are the mechanisms that bring nonspecific material into a cell.