Chloroplasts also produce oxygen as a by-product of the process. Oxygen is a waste product for plants, and they expel it through structures called stoma, which are most abundant on the undersides of leaves.Chloroplasts only occur in the cells of plants and protists.
1 A 3d/4d ultrasound can cost anywhere from $100 to $300. 2  This price range depends mostly on how many features you wish to be included in your ultrasound experience.3  The more features you choose and the longer the session, the higher the cost will be. 4  On average, plan on spending anywhere from $100 to $1,000. A 3d/4d ultrasound can cost anywhere from $100 to $300. 2  This price range depends mostly on how many features you wish to be included in your ultrasound experience.
1 The GE Voluson 730 Expert 4D Ultrasound Machine starts at about $75,000. 2  Refurbished models are available for less than $50,000. 3  A refurbished Philips Envisor C 3D Ultrasound Machine can be purchased for $20,000 to $40,000.ost new ultrasound machines fall in the $20,000 to $75,000 range. Used or refurbished machines-which offer a great opportunity for saving money-usually run $5,000 to $40,000 for average models. 1  The GE Voluson E8 Expert BT06 Ultrasound Machine starts at about $115,000.