Extracellular and intracellular chemical environments in relation to embryogenesis in vitro.
D000641:Ammonia / Q000378:metabolism*; D003470:Culture Media; D046508:Culture Techniques; D009584:Nitrogen / Q000378:metabolism*; D010944:Plants / Q000196:embryology*
D003470:Culture Media; D000641:Ammonia; D009584:Nitrogen