a close-up of a cell nucleus with visible chromosomes

cell nucleus chromosomes dna biology science medical genetic research microscope microscopic cellular structure organelle life growth division reproduction molecular bio biophysics biomedical anatomy bioengineering biomechanics bioinformatics biomaterials biotechnology bioimaging biostatistics biosynthesis biomimicry biopolymer bioremediation biorobotics biosecurity biosensor bioethics genomics genetics genome gene close-up visible