that brain waves are apparent 43 days postconception
Those covariates were postconception
age at the time of exam (calculated as gestational age at birth plus age at exam, continuous), infant size at exam [weight-for-length z-score (ZWL), continuous], mother's age (continuous), child's race (non-Hispanic white vs.
Effects on the postnatal development of the mouse of preconception, postconception
and/or suckling exposure to manganese via maternal inhalation exposure to MnO2 dust.
The endothelial heart tube, the first organ system to form, folds in on itself and begins to beat at 21 days postconception
Therefore, we reasoned that sweat testing should be not performed on infants younger than 36 weeks postconception
and not before 48 hours after birth, as outlined by the CLSI guideline (5) in points 8.
examined urine concentrations of total hCG, hCG[beta]cf, hCG[beta], and intact hCG during the first 6 weeks postconception
and demonstrated that, in the first several weeks, intact hCG concentrations are greater than hCG[beta]cf (5).
Significantly more women in the postconception
group were primigravidae than in the pre-conception group (18% v.
Ionizing radiation from CT may result in teratogenic effects to the fetus at high doses up to 15 weeks postconception
article supported the statement that "[a]nything postconception
injections of Furosemide (Seguril(r) HOECHST, Barcelona, Spain) separated by 2 h on day 14, 17, and 20 postconception
; three "Saline dams" (D-sFUR) were injected two times with saline vehicle on day 14, 17, and 20 postconception
and used as control for the D-FUR group; three "Intact dams" (D- INTACT) received no treatment.
The periconceptional period was defined as 4 weeks before the last menstrual period (LMP) through to 8 weeks after the LMP, further categorised as preconception and postconception
For example, closure of the ventricular septum occurs by 6 weeks postconception
, so an exposure that causes a ventricular septal defect (VSD) must occur before 6 weeks.