Sertoli cells have receptors for follicle stimulating hormone (FSH) and testosterone which are the main hormonal regulators of spermatogenesis. Hormones such as testosterone, FSH and luteinizing hormone (LH) are known to influence the germ cell fate. Their removal induces germ cell apoptosis.
In very basic terms, ISO is the level of sensitivity of your camera to available light. The lower the ISO number, the less sensitive it is to the light, while a higher ISO number increases the sensitivity of your camera. The component within your camera that can change sensitivity is called âimage sensorâ or simply âsensorâ.
Remember, your eyes adjust to any lighting conditions, making you see everything clearly. Cameras need plenty of light to take good pictures. If your camera is already in Hi 1 ISO, it means that the amount of light is extremely low. Try taking pictures with a flash or open up windows to let more light into the room.