The variable X is a 'parent' of Y just in case there is an arrow from X to Y. X is an 'ancestor' of Y (and Y is a 'descendant' of X) just in case there is a 'directed path' from X to Y consisting of arrows lining up tip-to-tail linking intermediate variables.
Traditionally, the ontogenetic tree symbolizing cellular differentiation pathways, for instance hematopoiesis, consisted of arrows arranged in certain sequence and often branching but always pointing in the same direction, therefore signifying progress and irreversibility.
A succession of awful data has pummelled his economic programme, which consists of three "arrows": a radical monetary easing, a big fiscal stimulus and a series of structural reforms.
That team consists of straight arrow Agent Grant Ward Brett Daltonn), an expert in combat and espionage; pilot and martial artist Agent Melinda May (Ming-Na Wen); and brilliant if socially awkward scientists Agent Leo Fitz Iain De Caesteckerr) and Agent Jemma Simmons (Elizabeth Henstridge).
The reaction formula consists of two arrow-separated lists of reactant and product substances.
In the two examples above, the field is the field of the real numbers and the set of the vectors consists of the planar arrows with fixed starting point and of pairs of real numbers, respectively.
Cardiac tissues of control group showing normal structure of cardiac muscles consists of muscle fibers (arrows) are shown in Figure 4(a).
Participants were instructed to respond as quickly and accurately as possible by pressing "S" when the probe consisted of left arrows, and "L" when the probe consisted of right arrows.
The illusion consists of a series of arrow-like figures (see image above).
FITA round distances are 90, 70, 50, and 30 metres (295, 230, 164, and 98 feet) for men and 70, 60, 50, and 30 metres for women, and the standard FITA round for both men and women consisted of 36 arrows per round being shot at each distance.
