PNG Human Hand Fist Close-Up

close-up studio product-style photograph of a human hand clenched into a fist, palm side facing viewer, wrist extending downward, fingers curled tightly across the top with thumb wrapped over the index and middle fingers, realistic skin texture with visible knuckles, creases, wrinkles, veins and subtle pores, isolated cutout on a pure white background, centered vertical framing, sharp focus, high detail, natural warm skin tones, soft even studio lighting with gentle highlights on knuckles and mild shadows in palm folds, clean minimal composition, photorealistic medical reference image, no jewelry, no sleeves, no text