21. Crocodile bile resembles mammalian bile which is universally found in the digestive tract of all higher animals . 22. Therefore, nature seems to have preserved the enteric nervous system as an independent circuit inside higher animals . 23. "We need to have one higher animal between rats and humans, " he said. 24. Usually, in higher animals , the glycoconjugates that are prone to be degraded are captured by endocytosis. 25. In higher animals including humans, retinoic acid regulates differential expression of Hox genes along the anteroposterior axis. 26. He also summarised all the known families and genera of the higher animals and listed their known geographic distributions. 27. Iodine is required by higher animals , which use it to synthesize thyroid hormones, which contain the element. 28. Manufacturers of the chemical say that phthalates do not cause damage to humans or other higher animals , including monkeys. 29. This implies that higher animals invented a much more sophisticated intercellular communications system as they evolved away from the worm. 30. Unlike in higher animals , where parthenogenesis is rare, asexual reproduction may occur in plants by several different mechanisms.
