[heâ³mah-to-poi-eÂ´sis] the formation and development of blood cells. In the embryo and fetus it takes place in a variety of sites including the liver, spleen, thymus, lymph nodes, and bone marrow; from birth throughout the rest of life it is mainly in the bone marrow with a small amount occurring in lymph nodes.
Calories in a Crispy Pico Guacamole Chicken Sandwich There are 680 calories in a Crispy Pico Guacamole Chicken Sandwich from McDonald's. Most of those calories come from fat (41%) and carbohydrates (41%).
The 450 calories in one serving of McDonald's Sausage Egg & Cheese McMuffin Breakfast Sandwich are equivalent to the calories burned while: 1  Running (6 mph) for 38 minutes. 2  Stationary rowing for 1 hour and 18 minutes. 3  Chopping wood for 59 minutes.  Sleeping for 6 hours and 37 minutes.