Tyrosinase plays an important role in the formation of the shell matrix and melanin synthesis in mollusks shells. A cDNA clone encoding a 47 kDa protein was isolated from the pearl oyster Pinctada fucata. The cDNA was 1,957 base pairs long and encodes a 417 residue protein that has extensive sequence identity with tyrosinase (polyphenol oxidase: EC 1.14.18.1). This tyrosinase-like protein, term...

Three cases of sudden isolated upper motor neuron facial palsy and two with associated pseudobulbar palsy have been seen. All were without significant limb weakness. Computed tomography demonstrated small deep infarcts in the internal capsular/corona radiata regions. Pure upper motor neuron facial palsy may be another lacunar syndrome, due to a lesion in the internal capsule or corona radiata.

objective: to study plants purification capability of  cu on two cultivars of vetch plant (vigna radiata) in contaminated soils and their effects on morphological characteristics. methods: we conducted a completely randomized trial as factorial. different concentrations of  cu (0, 150, 300, and 400 mg/ kg of dried soil) were used. after four weeks growth on contaminated soil, parameters such as...

Pearl oysters are a fishery commodity with high economic value because all parts of its body have sale value. However, many problems pearl oyster hatcheries low survival rates and growth is not uniform. The research objective to determine the effect interval time immersion in natural feed tank concentrate Chaetoceros simplex determiinterval best duced grey rate (Pinctada maxima). method this ex...

Cultured pearls can be produced both with and without a nucleus. Marine pearl oysters that produce Akoya, South Sea and Tahitian cultured pearls typically use nuclei for their pearl products. The nucleus material used for these beaded cultured pearls is traditionally from freshwater Mississippi mussels. In recent years, there have been a number of attempts to use alternative pearl and shell mat...