Fidgety embryos grow longer limbs

Nights grow longer.

About the Author Dr. Ibitayo is Clinical Assistant Professor, The University of Texas at Arlington, College of Nursing, Arlington, Texas. Address correspondence to Kristina Ibitayo, PhD, RN, Clinical Assistant Professor, The University of Texas at Arlington, College of Nursing, 411 S. Nedderman Drive, Box 19407, Arlington, TX 76019; e-mail: [email protected]. Received: October 18, 2010 Accepted: ...

Embryos, Grow in Human Urine, and Colonize the Murine Kidney

Gait changes in a line of mice artificially selected for longer limbs

In legged terrestrial locomotion, the duration of stance phase, i.e., when limbs are in contact with the substrate, is positively correlated with limb length, and negatively correlated with the metabolic cost of transport. These relationships are well documented at the interspecific level, across a broad range of body sizes and travel speeds. However, such relationships are harder to evaluate w...

A Study of Feather Character in Limbs Transplanted between Embryos of Different Bird Species.

The Ectodermal Thickening and Ridge in the Limbs of Staged Human Embryos

T H E limbs of amniote embryos are characterized by a thickening of the epiblast at their tips (Balfour, 1885). Kolliker (1879) illustrated such a thickening in a section of a chick embryo and, according to Braus (1906), was responsible for the term 'ectodermal cap' {Ektodermkappe). Saunders (1948) showed in the chick by experimental means that 'the thickened ectoderm at the apex of the bud' is...