Lymphoma occurs when lymphocytes, a type of white blood cell, grow abnormally. The body has two types of lymphocytes: B lymphocytes, or B-cells, and T lymphocytes, or T-cells. Although both cell types can develop into lymphomas, B-cell lymphomas are more common.ymphoma is a cancer of the white blood cells, namely lymphocytes, that happen to constitute the lymphatic system. The two main types of lymphoma are Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL).
The US child care services industry includes about 55,000 commercial facilities with combined annual revenue of $20 billion, plus about 21,000 facilities run by nonprofit organizations with combined annual revenue of about $32 billion.
Child care or childcare, child minding, daycare, or preschool is the caring for and supervision of a child or children, usually from age six weeks to age thirteen. Child care is the action or skill of looking after children by a day-care center, babysitter, or other providers. Child care is a broad topic covering a wide spectrum of contexts, activities, social and cultural conventions, and institutions.