The effect of the neurotransmitters tends to be fast, as in a case of external stimuli, which leads to a quick reaction of the body, towards that stimulus.
The effect of a hormone, however, is long-lasting, where hormones actually are working on the metabolic or structural situations, which are going to have a long-lasting effect on the body.
An average person (let's say one that weights 70 kg) has about 5.5 liters of blood (that's a little more than 160 ounces or 1.2 to 1.5 gallons). Other way of saying this is : about 7% of body weight.
Answer: Because Watson and Crick were stealing the ideas that she made. And because if she did share it everyone would probably only acknowledged the two men and NOT Rosalind Franklin.
Explanation: