fertilization, ovum, spermatozoon, sperma grey icon.

fertilization ovum spermatozoon icon fertility reproduction sperm pregnancy biology cell reproductive insemination ovulation fertile egg semen ovule spermatozoid biological spermatozoa fertilized fetus pregnant baby newborn obstetrics female gynecology childbirth gestation midwifery childbearing business outline vector symbol thin web sign design element isolated pictogram simple vitro grey gray monochrome