man scientist: medium-dark skin tone 👨🏾‍🔬

👍thumbs up 🙏folded hands 👏clapping hands 👇backhand index pointing down 👋waving hand 🤚raised back of hand 🖐️hand with fingers splayed ✋raised hand 🖖vulcan salute 🫱rightwards hand 🫲leftwards hand 🫳palm down hand 🫴palm up hand 🫷leftwards pushing hand 🫸rightwards pushing hand 👌OK hand 🤌pinched fingers 🤏pinching hand 🫰hand with index finger and thumb crossed 🤟love-you gesture 🤘sign of the horns 🤙call me hand 👈backhand index pointing left 👉backhand index pointing right