1) Basal media are the most basic type of synthetic medium and only contain the essential nutrients required for cell growth and survival. Common basal media include Dulbecco's Modified Eagle Medium (DMEM) and RPMI 1640 Medium.
2) Supplemented media are basal media that have been supplemented with additional components, such as serum or growth factors, to support the growth of specific cell types. For example, DMEM supplemented with 10% fetal bovine serum (FBS) is commonly used to culture mammalian cells.
In addition to basal media and supplemented media, there are also a number of specialized synthetic media that have been developed for specific purposes. For example, some synthetic media have been designed to be serum-free, while others have been optimized for the culture of stem cells.
Synthetic media are an important tool for cell culture research, as they allow researchers to precisely control the composition of the culture environment and study the effects of specific nutrients and growth factors on cell behavior.