This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
HisEmbryo. en Comparison of human and pig embryo The embryos look remarkable different and contradict Ernst Haeckel's biogenetic law Wilhelm His ber unsere Krperform und das physiologische Problem ihrer Entstehung Vogel Leipzig Wilhelm His PDold Embryos Human embryos
Page 2023 Free-images.com. All images are Public Domain