two scientists show their appreciation by shaking hands or high-fiving each other after their long-standing scientific research

laboratory handshake microscope happy high five scientist chemist chemistry research biology skilled doctor science chemical medicine discussion biotechnology professional concentration microbiology development hospital expertise test study liquid protection discovery experiment innovation indoor virus analyzing scientific analysis occupation teamwork working workplace health care glasses university beaker biochemistry lab coat analysing color tube blue two scientists show appreciation shaking hands high-fiving long-standing successful researchers signs joy work