You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In a patient of orbital cellulitis, microorganism on culture show greenish colonies and optochin sensitivity. The most likely organism is: and explain in detail?
Ans. is 'd' i.e., PneumococcusGram-positive cocci which form a-hemolytic colonies (Greenish colonies) and is optochin sensitive is pneumococcus.The characteristic features of pneumococcus are: (BIO) (Memory Aid)(a) Bile solubility.(b) Optochin sensitivity.(c) Inulin fermentation.(d) Shows quellung reaction (capsular delineation).(e) Forms draughtsman or carrom coin colonies (Colonies with central umbonation).