Biosafety and biosecurity We performed all experiments with pseudotyped lentiviral particles at biosafety level 2 (ref. 59). These pseudoviruses do not encode any other viral proteins other than RSV F and therefore can only undergo a single round of cell entry, and so they are not fully replicative infectious agents capable of causing disease. The other
Bispecific antibodies (orange and yellow, artist’s illustration) grab onto two different proteins rather than the standard one.Credit: Thom Leach/Science Photo Library Cancer-fighting drugs called bispecific antibodies are having a moment. A growing number are making their way into the clinic, and researchers are developing increasingly elaborate molecules with new capabilities. In the past five years,
