"heavy expression" is a correct and usable phrase in written English.
You can use it when someone has a noticeable, serious, and/or emotional look on their face. For example, "He looked up at her with a heavy expression on his face."
Mr. Gore, there to meet his successor, Dick Cheney, had a heavy expression, although later, in the minutes before the inaugural ceremony, he too flashed a grin.
26 embryos showed a heavy expression as viewed in toto, with some "banded" aspects along the antero-posterior axis of the neural tube (Fig. 1A, B).
The heavy expression of integrins in association with astrocytes migration and microglia activation of the optic nerve head clearly suggests that these integrins can play an important role in glaucomatous neuropathy.
Since these components are not needed for the following analysis and are only minor calculus details, we do not specify these heavy expressions.
At E17.5, the heaviest expression occurred with crypt formation.
According to our analyses of myosin heavy chain expression, multinucleate myotube formation, and the expression of differentiation-specific genes (myogenin, troponin T, MHC), the differentiation of myoblasts on PCL/PANi nanofibers was strongly dependent on both nanofiber alignment and PANi concentration.
Through immunofluorescence staining we observed that the engineered MyoD variants promote increased cell fusion and elevated levels of myosin heavy chain expression in vitro when compared with WTMyoD after 10 days of expression.
HS lasting three days or longer induces dramatic remodeling events in the rat soleus muscle that include slow-to-fast shift in myosin heavy chain expression pattern, changes in the neuromuscular junction, changes in ion channels expression as well as depolarization of the RMP [ 7– 11].
In the heart, amiodarone decreases heart rate and alpha myosin heavy chain expression (mediated via TR alpha-1), and increases sarcoplasmic reticulum calcium-activated ATPase and beta myosin heavy chain expression (mediated via TR beta-1).
Positive staining for myosin heavy chain expression indicated that differentiation of C2C12 multinucleated cells occurred within the porous elastomeric substrate.
In humans, small fiber cross-sectional area, higher capillary density, and increased oxidative myosin heavy chain expression characterize the muscle of elite endurance athletes18.
