group of male spermatozoa is approaching female egg. blurred gradient background, in red and blue tones with gentle illumination.

medical cell sperm male spermatozoa fertility female process material biological liquid fertilization reproduction biotechnology health egg human biology illustration genetic insemination spermatozoon design sample oocyte fertilisation background laboratory donor preservation object biochemistry medicine white pregnancy science anatomy fertile embryo life ovulation concept scientific symbol penetration biomaterial zygote contraception