Over the last two decades, an additional ‘tool’ to measure nutrient intake has been introduced by the UK Government. This is the ground-breaking National Diet and Nutrition Survey (NDNS), which has revealed widespread risk of micronutrient deficiency. For each NDNS, about 2000 people are selected at random from postal codes to reflect the age, sex, income, and geographical distribution of the U...

Cholinergic receptors were studied in membranes prepared from rabbit cornea, iris-ciliary body, and retina, using 3H-quinuclidinyl benzilate (3H-QNB) to identify muscarinic receptors and 125I-alpha-bungarotoxin (125I-BGT) to identify nicotinic receptors. Muscarinic cholinergic receptors were not found in the cornea. As a positive control, muscarinic cholinergic receptors were characterized in p...