These two types include homotypic and heterotypic cell fusion. The arrangements of these hemichannels can be homotypic, heterotypic, and combined heterotypic/heteromeric. The heterotypic synonym for this genus is the Staphylococcus. It comprises 32 morphologically defined species and 5 heterotypic subspecies. Human H5N1 vaccines are currently available and can induce heterotypic immunity. There are two types of miP inhibitions&colon; homotypic miP inhibition and heterotypic miP inhibition. Many large TF families form complex homotypic or heterotypic interactions through dimerization. Netrins may also associate with this network through heterotypic LN domain interactions. In heterotypic miP inhibition, microproteins interact with proteins with different but compatible PPI domain. While heterotypic IgG antibody titers decrease, homotypic IgG antibody titers increase over long time periods. This name was later considered to be a (heterotypic) synonym of "Hemionitis arifolia". It has the outdated heterotypic synonym "Laurus porrecta" (Roxb.). These heterotypic antibody titers decrease over long time periods (4 to 20 years). According to Hoyles et al. 2004, this species is a heterotypic synonym of "Falcivibrio grandis".