Fibroblast cells do produce interferon-gamma. IFNy is a member interferon type II class. Earlier on, IFNy was called as the immune interferon.

Interferon is a type of protein that is made up of a chain of amino acids. The exact number of amino acids in interferon can vary depending on the specific type or subtype of interferon. However, on average, a typical interferon protein is composed of approximately 166 to 1669 amino acids.

The Pegylated interferon treats chronic hepatitis. Pegylated interferon, usually called peginterferon, is chemically modified from the standard interferon that treats hepatitis C and B.

there is three types of interferons.

Gamma interferon, also known as IFN-γ, is a type of cytokine produced by certain immune cells in response to pathogens. It plays a crucial role in activating immune responses, particularly in regulating the activity of immune cells like macrophages and T lymphocytes. Gamma interferon helps to enhance the immune system's ability to fight infections and tumors.