There are multiple definitions:

1. virus-like particle(English)

   • supramolecular structure that closely resembles viruses (analogous to an empty shell), but is replication-deficient because it contains no viral genetic material (DNA or RNA). Shown to be a strong activator of dendritic cells, which are the most potent antigen presenting cells, and their activation prompts the priming of immunity mediators based on B and T cells. The first step for their activation is the binding of VLP to pattern recognition receptors on the surface of DCs, followed by VLP internalization
   • APC, BCR, DC, MHC, PAMP, PRR
   • Immunology, Virology
   • https://doi.org…immu.2020.01100

2. variable long pulsed(English)

   • SH
   • Dermatology, Laser technique
   • http://pubmed.n…h.gov/32484621/