fertilized egg with sperm. .

activity anatomy art artificial baby backdrop background biology birth cell chemistry concept conception conjugation egg embryo female fertile fertility fertilization fertilize fertilized genesis genetic gynecology health human icsi illustration incipience infertility insemination ivf life male medical medicine micro microbiology molecular move nature ovule ovum pattern pregnancy procreation reproduction reproductive science semen sexual shape sperm spermatozoon spermatozoons swim symbol tadpole vector zoosperm